Liverpool goalkeeper Alisson will miss next week's UEFA Super Cup match against Chelsea after suffering a right calf injury in Friday's Premier League season opening win over Norwich City.

The Brazil international came off in the 39th minute of the match after slipping and holding his calf. He waived off the stretcher but needed assistance from the team's trainers to come off the pitch at Anfield.

Liverpool had four first-half goals to ensure a 4-1 win over newly promoted Norwich.

- Player ratings: Salah 9/10, Origi 8/10 in opening rout
- Reddy: The story behind Alexander-Arnold's mural

"We have to see how serious it is and deal with it," Liverpool manager Jurgen Klopp said of Alisson's injury in a post-match news conference. "It's a calf injury. He couldn't carry on, which is never a good sign... he will not play [in Wednesday's Super Cup]."

Alisson -- who started all of last season's 38 Premier League matches -- was instrumental in Liverpool's Champions League title run in May, as well as Brazil's Copa America victory this summer.

Liverpool next travel to Istanbul where they will play defending Europa League winners Chelsea for the Super Cup.

Newly signed Spanish goalkeeper Adrian came on for the Reds, his first game in uniform since joining from West Ham on a free transfer this week. His only blemish in his Anfield debut came when Teemu Pukki, who led the Championship last season with 29 goals, scored for the visitors just past the hour mark.

"[Adrian] is a very confident guy and he came in and I don't think he wanted to sit only on the bench for the next couple of years," Klopp said. "He made himself ready.

"He is 32, a calm guy, emotional as well, good with his feet - how we saw - and that's really important for us."

Liverpool sold longtime keeper Simon Mignolet last week to Belgian side Club Brugge. Caoimhin Kelleher as is expected to serve as Adrian's understudy for the Super Cup fixture, with the youngster having recently returned to training following a broken wrist.

"There are a lot of good things, but you still don't want to have a situation where one goalie is fit," Klopp said. "That's how it is, but we have to see."

ESPN FC's Melissa Reddy contributed to this report.

Liverpool swaggered their way into the new Premier League season with a 4-1 victory over Norwich City, which extended their unbeaten record at Anfield in the competition to 41 matches.

Positives

There were goals, goals and more goals for the European champions with Sadio Mane, a late returnee given his involvement in the Africa Cup of Nations final with Senegal, only used as a late substitute. Fellow forwards Mohamed Salah and Roberto Firmino were sharp and persistent threats while Divock Origi reprised his habit of being decisive.

- Report: Liverpool 4, Norwich 1
- Alisson injured in Liverpool's season opener

Right-back Trent Alexander-Arnold's deliveries continue to draw swoons and create opportunities, with Andrew Robertson as solid as you expect on the opposite flank.

Negatives

Alisson limping off on 42 minutes with a lower leg injury clouded the victory and Liverpool will be crossing fingers and all else that the goalkeeper's injury is minor rather than major. Furthermore, the hosts were too open in a first half that saw Norwich have more total shots (seven to six) and conceded on 64 minutes due to being too passive and failing to apply pressure. Their defensive standards were definitely not up to the level the team would expect from themselves.

Manager rating (out of 10)

Jurgen Klopp, 7 -- Saw his side not needing to exert themselves too much while recording a comfortable win and had his face added to the famous banner on the Kop featuring European Cup-winning managers. He'll be sweating on Alisson's health.

Player ratings (1-10; 10 = best, players introduced after 70 minutes get no rating)

GK Alisson Becker, 7 -- A pass meant for Joe Gomez that was too short and intercepted by Teemu Pukki was not the best start to the evening for the Brazil international, who reverted to form and proved his class with saves, with one sharp stop denying Marco Stiepermann in particular. Injured during a goal kick and replaced before half-time, Liverpool cannot afford to be without their world-class keeper for a stretch of time.

DF Trent Alexander-Arnold, 7 -- Made key passes, had several interceptions and whipped in a glorious ball for Liverpool's fourth goal that was gleefully converted by Origi.

DF Joe Gomez, 6 -- Played the ball that sparked the second goal but should have reacted better in the stanza that saw Norwich get their consolation strike.

DF Virgil van Dijk, 7 -- Powerfully headed in Liverpool's third from Salah's corner and led the way in terms of tackles and interceptions. Typically solid in the air and in his individual duels.

DF Andy Robertson, 6 -- Most of the side's play funnelled through the left-back, who had the most touches and passes. Played Pukki onside for Norwich's goal.

MF Fabinho, 7 -- His ability to read the game and stifle the opposition's play is superb. Had the most tackles, most regains and won the majority of his duels.

MF Jordan Henderson, 7 -- Had a shot turned onto the bar by Tim Krul and was alert to a Fabinho shot that was fumbled. An industrious all-round performance from the captain.

MF Gini Wijnaldum, 5 -- A quiet game from the midfielder, who struggled to have much of an influence on the game.

FW Divock Origi, 8 -- Forced the early own goal with his low cross from the left, headed in Alexander-Arnold's ball for Liverpool's fourth and was dangerous throughout the encounter.

FW Roberto Firmino, 9 -- Unplayable. Unselfish. Showed his quick feet and was sharp in his decision-making, too. Made an array of backheels, executed some superb pressing and did just about everything Klopp could have asked for. Had a volley on the turn, which Krul was equal to early on in the game, too. Got the assist for Salah's strike and really should have been on the scoresheet himself.

FW Mohamed Salah, 8 -- A goal, an assist, three key passes and a constant nightmare for Norwich's markers. Looks super fit, stronger and shows no dwindling in determination to land another Golden Boot.

Substitutes:

GK Adrian, 6 -- Making an unexpected debut, he made two saves and will be disappointed not to have kept a clean sheet with 3-0 to the good upon his introduction.

FW Sadio Mane, NR -- Entered after 74 minutes in place of Origi, he showed some flashes but was mainly working himself back into the first-team after some well-earned time off.

MF James Milner, NR -- Replaced Firmino after 86 minutes.

Gloucestershire 165 for 8 (Cockbain 40) beat Surrey 94 for 2 (S Curran 51*) by nine runs (DLS method)

Surrey were beaten by nine runs by Gloucestershire on Duckworth-Lewis-Stern calculations, suffering their sixth defeat in eight Vitality Blast outings this season, when a rain delay left them needing to score 52 from another 4.1 overs at the Kia Oval.

They managed 42 of them, taking their total of 52 for 2 from 7.5 overs when the rain came, in reply to Gloucestershire's 165 for 8, to an eventual 94 for 2. When they were left needing 25 from the last over, however, the game was already all but over.

Sam Curran swung Benny Howell for six and Andrew Tye for two more maximums in the final over to reach a defiant 51 not out from 35 balls, while Ollie Pope finished on an unbeaten 13.

But Howell, fellow medium-pacer Ryan Higgins and fast bowler Tye - who between them sent down the 25 balls after the restart - kept their cool despite understandably greasy conditions to earn Gloucestershire a third win of the T20 campaign and keep them in contention for quarter-final qualification from the South Group.

Gloucestershire's 20-over total was built on a 15-ball 30 up front from Miles Hammond, James Bracey's 25-ball 33 and 40 from 28 balls from Ian Cockbain in the middle overs, and then a useful 22 not out at the end by Jack Taylor, from 12 balls and with four well-struck fours.

Surrey suffered two early blows when Aaron Finch, their big-hitting Australian opener, edged a rising ball from Chris Liddle to keeper Bracey to depart for 12 to the last ball of the fourth over, and Will Jacks was caught at extra cover off a leading edge for 15 in slow left-armer Tom Smith's first over.

From 42 for 2 much depended for Surrey on the youthful third wicket pair of Curran and Pope, but they had only added ten runs when rain arrived at 8.35pm to drive the players off, with one ball of the eighth over remaining. When play was able to resume, at 9.30pm, the pair faced an almost impossible task.

Gloucestershire, who won the toss, reached 48 for 1 in their initial six-over Powerplay with most of those runs coming from opener Hammond who struck Imran Tahir for two fours in the opening over, took two leg-side fours off Sam Curran in the third over and then lofted brother Tom over long-on for six in the next over.

When Hammond's violent cameo ended with a carve to deep cover off Jade Dernbach, it was left to Bracey to join Michael Klinger and add 24 for the second wicket before the Gloucestershire captain top-edged a pull at Sam Curran to deep square leg to go for 12.

Bracey played some fine shots as Gloucestershire made it to 82 for 2 at the halfway point, but he was caught at long-on off Sam Curran in the 12th over and the visitors needed a busy 17 from Higgins for forward momentum until Cockbain took two straight fours and three twos off the 16th over, bowled by Dernbach and costing 15.

Cockbain then swung South Africa legspinner Tahir for a massive six over midwicket but, later in the same over, perished to a catch at long-on and Howell, Tye and Smith all fell in the frenetic final overs as only Taylor's judicious late hitting - when he could get the strike - enabled Gloucestershire to post a competitive total.

Durham 160 for 5 (Short 68, Steel 47) beat Derbyshire 153 for 9 (Godleman 39, Trevaskis 3-16) by seven runs

Liam Trevaskis and D'Arcy Short delivered match-winning performances as Durham edged out the Derbyshire Falcons by seven runs in a rain-affected North Group match at Derby.

Short top scored with 68 from 48 balls, sharing an opening stand of 114 with Scott Steel as Durham made 160 for 5 with Matt Critchley claiming 2 for 22. Trevaskis then turned the game with 3 for 16 and although Fynn Hudson-Prentice scored an unbeaten 31 from 24 balls, the Falcons came up short on 153 for 7.

Durham looked set for a bigger total after Short and Steel gave them a solid base but the Falcons kept them in check in the closing overs through disciplined bowling and keen fielding.

A strong wind meant hitting the ball in the air carried an element of risk and a slow pitch also made it difficult to accelerate as Durham discovered when they tried to raise the tempo.

Short drove Logan van Beek for consecutive fours as 50 came from the Powerplay but he should have been dismissed on 35 when a top-edged cut at Boyd Rankin was put down by wicketkeeper Daryn Smit at the second attempt.

It threatened to be costly as Short lifted van Beek over wide long-on for what was to be the only six of the innings and then pulled the next ball for four. But when he tried to hit Critchley over the top, he skied a catch to Smit and Alex Lees went in the next over when van Beek took a well judged catch at long-on.

Scott's attempt to reverse-sweep Critchley ended in the hands of backward square and as Durham lost momentum, the innings was in danger of stalling until Peter Handscomb managed to drive Hudson-Prentice over cover to the boundary off the penultimate ball.

Billy Godleman launched the chase with two boundaries from Brydon Carse and after a brief rain delay, he savaged the third over from Matty Potts. The third ball was driven for six, the next two carved to the third man boundary before Godleman dispatched the sixth over long-off for another maximum.

Former Falcons seamer Nathan Rimmington responded by conceding only four from the next over and after Luis Reece was well caught by Jack Burnham at deep midwicket, Godleman was bowled charging Rimmington for 39 off 20 balls.

Wayne Madsen reverse-swept Short for six and drove and swept Steel for two more fours but Trevaskis gave Durham the initiative with three wickets in two overs. After Leus du Plooy failed to clear long-off, Trevaskis held a fierce return catch to remove Madsen for 30 and then had Alex Hughes stumped.

Critchley was well caught at long-on and after a 20-minute rain delay, Durham held their nerve to close the game out despite some defiant blows from van Beek and Hudson-Prentice.

Sussex 130 for 6 (Carey 32, Sowter 3-20) beat Middlesex 127 for 6 (Eskinazi 57*, Robinson 4-15) by four wickets

Sussex Sharks strengthened their grip on the South Group in the Vitality Blast after easing to a four-wicket wicket win over Middlesex. A sold-out 6000 crowd at Hove saw third-placed Middlesex recover from 40 for 5 to 127 for 6 with Ollie Robinson taking 4 for 13. Despite losing two wickets in the power-play Sussex sealed their victory with 22 balls to spare.

It was their sixth win in eight games with one match washed out and the other tied and means they have opened up a two-point lead at the top of the South Group.

Australian Alex Carey, who was dropped at third man by Tom Helm off Steven Finn on 20, top-scored with 32 while skipper Luke Wright and David Wiese both made 26 with Wiese smashing two leg-side sixes, one of which cleared the main scoreboard, off Finn. Delray Rawlins cleared the ropes off Helm to win the game.

Middlesex were without Eoin Morgan, who has a sore back, and AB de Villiers, who has returned to South Africa after his spell at the club and they never really recovered after a terrible Powerplay which ended with them reeling on 28 for 4.

Rawlins held a well-judged catch on the midwicket boundary to remove Paul Stirling in Chris Jordan's first over before Robinson, benefitting from some seam movement on a sticky pitch, picked up three wickets including two in his third over on his way to career-best figures of 4 for 15. Dan Lincoln played on for a duck, Dawid Malan inside-edged to wicketkeeper Carey and John Simpson was caught at short fine-leg after gloving Robinson's short ball.

Steve Eskinazi and George Scott took the score to 40 when Scott was leg before playing across the line in the ninth over to give Danny Briggs, who conceded just 16 runs in his four overs, a deserved wicket.

Middlesex were in danger of being bowled out but Eskinazi and Toby Roland-Jones, who was dropped on 7 and 9, consolidated before pushing the accelerator in the final five overs as they added 76 off 57 balls with Eskinazi lodging his fifth T20 half-century.

Roland-Jones supported him well with 40 off 34 balls including two fours and two sixes before Robinson yorked him in the penultimate over to claim his fourth wicket. Eskinazi finished on 57 not out from 48 balls with six boundaries.

The visitors needed early wickets and soon had Sussex 15 for 2. Phil Salt was superbly caught on the run by Nathan Sowter at deep midwicket and Laurie Evans edged Mujeeb Ur Rahman to slip. Wright looked in good order until he mis-timed a drive and was taken at mid-off but Middlesex simply didn't have enough runs to defend.

Nottinghamshire 86 for 2 (Clarke 47*) beat Birmingham 119 for 9 (Hain 49, Wood 3-24) by 28 runs (DLS method)

Nottinghamshire Outlaws moved to second place in the Vitality Blast North Group table after another commanding victory over Birmingham Bears. Outlaws won a rain-affected match at Edgbaston by eight wickets on the Duckworth-Lewis-Stern method.

Last week, they beat Birmingham at Trent Bridge and there only ever looked like being one winner in the West Midlands. Nottinghamshire are now four points behind Lancashire Lightning in the North Group.

The Outlaws restricted Birmingham to just 119 for 9 in a sluggish innings that produced four fours and no sixes. And opener Joe Clarke led the way in reply with an unbeaten 47 as Nottinghamshire reached 86 for 2 after only 11 overs before rain forced the game to be abandoned.

The Bears had no answer to the Outlaws attack with pace bowler Luke Wood the pick with figures of 3 for 24 - including a wicket from the final ball of his first over of the night. That was Wood's second first-over scalp in successive games and set the tone for what was to come.

Spinners Matt Carter and Imad Wasim claimed two victims apiece in key spells as Birmingham struggled for runs.

Dom Sibley provided some signs of recovery for the Bears with a 23-ball innings of 25 - including four boundaries - before he fell to Imad when Carter caught him at short third man to leave them 35 for 2. And the introduction of Carter and Pakistani allrounder Imad had Birmingham tied in knots.

Even the threatening rain clouds could not put an end to the Bears' misery as their innings was only interrupted when weather forced the players off for a 12-minute break.

Only two Bears players made it into double figures with the Outlaws calling the shots. But Sam Hain flew the flag for Bears before cruelly falling one short of his half-century. Hain departed when Birmingham captain Jeetan Patel drove off the bowling of Harry Gurney and managed to deflect the ball on to the stumps. That saw Hain dismissed for 49 from 47 balls.

Wood finished as he had started and took the ninth wicket - Oliver Hannon-Dalby - for 1.

In reply, Outlaws cut loose in the third over with Clarke hitting 24 runs including two sixes and three fours.

Nottinghamshire raced to 48 without loss after four overs. But, with more rain falling, the Outlaws lost their first wicket when Hannon-Dalby had Alex Hales caught behind for 11 in his first bowling spell.

The Outlaws made quick progress towards their target despite losing a second wicket with the score on 80 when Ben Duckett was bowled by Patel for 16. But the rain became too much and the players were forced off before an Outlaws victory was confirmed.

Somerset 202 for 4 (Babar 102*, Abell 57) beat Hampshire 69 for 6 (Taylor 2-12) by 63 runs (DLS method)

Babar Azam smashed his first Vitality Blast century, and highest career T20 score, to set up a crushing 63-run DLS win for Somerset over Hampshire. Pakistan star Babar is the leading run-scorer in the Blast and now has 425 runs in eight innings in the competition this season, 99 more than nearest rival D'Arcy Short.

Babar already had good memories of the Ageas Bowl, having struck 40 and 51 in ODIs on the ground and added to them with a remarkable 102 not out - which included seven fours and six maximums. The victory leaps Somerset above Hampshire into fifth, after consecutive wins, to boost their hopes of a knockout place.

James Vince won the toss and threw the ball to Chris Wood - and the seamer grabbed a wicket in his first over for the fourth time this season when Tom Banton was caught at mid-on. James Hildreth departed soon after when he clattered a cut to point to leave Somerset 37 for 2.

After two short rain delays, Babar and Tom Abell ramped up the scoring rate with a series of well-timed shots, with a smaller-than-usual Ageas Bowl outfield assisting them. Their 50 partnership came up in 34 balls, soon before Babar's square drive took him to his fourth half-century in the Blast, off 32 balls.

Abell followed Babar to the milestone, the first time he had reach 50 in T20 cricket, off 30-balls - reaching the landmark with back-to-back reverse sweeps to the boundary. He fell after a stand of 113, as did Eddie Byrom in the following over, but that simply spurred Babar on.

Babar had gone under the radar, preferring placement and skill to power but turned on the heat with his second fifty coming in just 23 balls. It was breathtaking batting with his maximums flying over deep midwicket, point, an incredible strike over cover and finally, off the last ball of the innings, a sweet strike over square leg to bring up three figures in the format for just the second time in his career.

That took Somerset to 202 for 4, and Hampshire's reply faltered in the second over as Tom Lammonby's direct hit ran out Rilee Rossouw. Wickets carried on falling at regular intervals thanks mainly to outrageous catches, courtesy of Max Waller, Banton and Roelof van der Merwe - somehow bettering each other with each attempt.

With Vince, Aneurin Donald, Liam Dawson, Chris Morris and Sam Northeast all gone, Hampshire's hopes of victory had all but died. And rain prevented further humiliation with eight overs and a ball to spare, with the hosts 63 adrift of the DLS score.