Police in Amsterdam say they fired a water cannon at football fans "to put out flares and prevent unsafe situations" ahead of the first leg of the Champions League quarterfinal between Ajax and Juventus.

Local broadcaster AT5 showed images of scores of chanting fans being hosed by the water cannon and responding by tossing fireworks and flares at police before mounted officers charge at them followed by riot police.

There was no immediate word on arrests.

Earlier Wednesday, police in the Dutch capital said they had detained dozens of Italians suspected of possessing flares, a knife, pepper spray and fireworks.

FOXBOROUGH, Mass. -- In their first personnel move at tight end since Rob Gronkowski announced his retirement in late March, the New England Patriots have agreed to a one-year deal with Austin Seferian-Jenkins, a source tells ESPN's Field Yates.

The Patriots have not announced the move, but Seferian-Jenkins confirmed in an Instagram post that he was signing with the team.

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The Patriots also hosted former Broncos and Texans wide receiver Demaryius Thomas and former Jaguars running back T.J. Yeldon for a visit on Wednesday, a source told Yates.

The 6-foot-5, 262-pound Seferian-Jenkins immediately becomes the Patriots' most accomplished pass-catcher at tight end, with 116 career receptions for 1,160 yards and 11 touchdowns in 43 games over five seasons.

The other four tight ends on the Patriots' depth chart -- Jacob Hollister, Stephen Anderson, Matt LaCosse and Ryan Izzo -- have combined for 71 career receptions.

Seferian-Jenkins, 26, had 11 catches for 90 yards and a touchdown before going on injured reserve in early October with a core muscle injury that required surgery. He became a free agent when the Jacksonville Jaguars declined his $500,000 option for 2019.

Seferian-Jenkins joined the Jaguars on a two-year, $10 million deal before last season after resurrecting his career with the New York Jets. The Tampa Bay Buccaneers cut him after a September 2016 drunken driving arrest, which ultimately resulted in a two-game suspension by the NFL at the start of the 2017 season.

ESPN's Michael DiRocco contributed to this report.

Former NBA general manager Jeff Bower has agreed to a deal to become the senior vice president of basketball operations with the Phoenix Suns, league sources told ESPN.

Suns owner Robert Sarver had discussed with prospective job candidates a senior advising role that would allow interim GM James Jones to continue in a lead front-office capacity with decision-making power, league sources said. Jones had sat in on interviews, along with Arizona Cardinals All-Pro receiver Larry Fitzgerald, league sources said.

Bower was the Pistons' general manager under president of basketball operations and coach Stan Van Gundy for four seasons until a change was made in May.

Bower has been a well-respected executive in the league for two decades, earning praise for his organization and scouting acumen in 11 seasons as GM in Charlotte, New Orleans and Detroit. Van Gundy made final decisions on personnel in Detroit.

Bower helped lead Detroit back into the playoffs in 2015-16 for the first time in five years, and he helped engineer trades for All-Star Blake Griffin and point guard Reggie Jackson. Bower has led two NBA franchises -- New Orleans and Detroit -- out of the lottery and into the postseason as a GM.

He also worked in the NBA and college as a coach.

NEW YORK -- Forbes estimates that the New York Yankees are baseball's most valuable franchise at $4.6 billion, up 15 percent from last year's figure.

The Los Angeles Dodgers are second at $3.3 billion, followed by the World Series champion Boston Red Sox at $3.2 billion, the Chicago Cubs ($3.1 billion), the San Francisco Giants ($3 billion) and the New York Mets ($2.3 billion).

The Yankees' YES Network broadcasts Forbes' "SportsMoney" television show.

Forbes' franchise values list released Wednesday estimates that the Miami Marlins are the least valuable team at $1 billion, just behind the Tampa Bay Rays ($1.01 billion).

Jacob Stockdale says the backing of team-mates and opponents helped him bounce back from his fumble in Ulster's Champions Cup defeat by Leinster.

The Ireland wing, 23, dropped the ball while trying to score, which cost Ulster a possible semi-final place.

The support of team-mates and Leinster players helped ease his dismay.

"It was really important for me because I was in a pretty dark place and I was really upset, so it was good to have that," he said.

Early in the second half, with Ulster leading by two points, Stockdale weaved past three Leinster defenders and appeared certain to touch the ball down for a superb solo try - but he lost control at the crucial moment and the try was disallowed.

Leinster responded by scoring a try of their own and the European champions eventually held on to win 21-18, securing their place in the last four.

The winger spoke to his team-mates in the changing room at full time and the following day made an apology to the travelling supporters on social media.

"A lot of people said to me that I shouldn't have felt that way, but I just felt like I had cost us a semi-final," he said.

"If I get that ball down it's a one-try or two-try game and we're looking pretty comfortable. All of a sudden I drop it and Leinster get back into the game.

"I just felt that I had to [apologise] and I realised that we had an incredible amount of support there - a lot of people had paid a lot of money to come down and watch us and made a lot of effort, so I felt like I had to say sorry that they weren't getting to enjoy a semi-final."

Stockdale was a despondent figure on the pitch at full time at the Aviva Stadium. The mistake occurred in the same corner of the pitch where he scored his famous try against New Zealand last November, but Ireland and Ulster captain Rory Best was one of the first to offer some words of encouragement.

"Besty was really important. He just put an arm around me and said, 'You had a really good game and that one moment is not going to define you' - I think that was probably something I needed to hear at that point," added Stockdale.

"Afterwards in the changing room I asked Besty if I could take a minute to say to the lads, because I wanted to apologise to them as well because they worked incredibly hard to get there and to not be in a semi-final.

"So I started to speak and - I think Besty said it - it turned into the House of Commons with everyone [shouting at me to sit down]. So that was really nice to have their support and it just showed me how close-knit a team we are."

Stockdale also received some messages from his international team-mates in the Leinster camp: "One or two of them didn't actually mention the drop, which I appreciated!

"I suppose, that again made me realise that everybody just wants you to do well and everybody supports each other, which at that point a day or two after the game was really important for me."

Ulster are in second place in Conference B with just two rounds of regular-season matches remaining in the Pro14. A victory in Edinburgh on Friday would guarantee the Irish province a quarter-final spot and a place in next season's European Champions Cup.

Stockdale is determined not to allow the fumble to affect his confidence for the rest of the season and is confident the experience has taught him some valuable lessons.

"I'm learning every time I step on to the pitch and some lessons are easy to learn and some are harder to learn - unfortunately this was one of the hard ones," he said.

NAPLES, Maine – Oxford Plains Speedway owner and Pro All Stars Series President Tom Mayberry has announced the continuation of the Road to the Oxford 250 program.

Celebrating its sixth year in 2019, the Road to the Oxford 250 will continue to give racers across the continent the chance to compete in short track asphalt racing’s biggest event.

Competitors from Canada and the United States will have opportunity to race for guaranteed Oxford 250 starting spots in six additional events, while keeping the focus on the 250 throughout the season.

“Our goal is to keep the focus on the 250 throughout the year.  While there will be several spots offered through the program, many of these will not have to be used since most of those competitors will advance through the famed heat and consolation races,” said Mayberry. “Competitors need to remember that this program will not reduce the number of starting positions that will be earned through the normal 250 qualifying procedures but will allow those who may be having a bad day to use the provisional if necessary, to guarantee their starting spot in this prestigious race.”

The first event to be featured in the Road to the Oxford 250 will be the previously-announced Leonard Evans 150 on April 27 at Wenatchee Valley Super Oval in Wenatchee Valley, Wash.

The winner of this event, along with the second and third place finishers, if PASS licensed and their Oxford 250 entry is received by June 1, will be guaranteed a provisional starting spot. The race winner will receive a full pay provisional, and second and third will receive a half-start provisional.

The Road then continues to the season opener at Oxford Plains Speedway on April 28; Thunder Road in Barre, Vt., on May 26; Speedway 95 in Bangor, Maine, on June 16; Star Speedway in Epping, N.H., on July 30; and finishes at Spud Speedway in Caribou, Maine on Aug. 4.

The top two finishing drivers each from Canada and the United States will earn provisionals to the 250. As with the Wenatchee Valley race, to be eligible to use the provisionals, drivers must be PASS Licensed and have their entries submitted for the Oxford 250.

The top U.S. and top Canadian driver will each receive a full start provisional, with the second place finishing U.S. and Canadian driver each earning a half-start provisional.

The final race as part of the Road to the Oxford 250 will be a special 100-lap open race at Oxford Plains Speedway on July 6. This will not be a points race for PASS.

The Independence Weekend race will see the top two Oxford Plains and top two PASS licensed finishing drivers earn a guaranteed spot in the Oxford 250.

Additionally, the top licensed drivers in points from PASS North, Oxford Plains Speedway, and the PASS National Championship Series, will have a provisional available if needed, as long as they have attempted to qualify for every race in their chosen series.

All drivers that will have guaranteed spots through the Road to the Oxford 250 or via championship points provisionals have to compete in their heat races and in their consolation race, but will not have to compete in the last chance race if they have not already qualified.