Jaiswal opened the batting alongside captain Rohit Sharma, with Shubman Gill moving down to the No. 3 spot vacated by Cheteshwar Pujara's axing. When he reached his hundred, off 215 balls, India were 205 for no loss after they had bowled West Indies out for 150 on day one.

Jaiswal has now brought that appetite to Test cricket. West Indies tested both openers even as they struggled to separate them, on a slow pitch that offered the spinners both turn and bounce. Right through his innings, Jaiswal was happy to show the patience he required to earn his run-scoring opportunities. He took 16 balls to get off the mark on the first evening, and began the second morning by shouldering arms five times in a row to Jason Holder. By the time he reached his hundred, he had left or defended 56 of the 104 balls he faced from West Indies' fast bowlers.

At the same time, he was also prepared to exploit gaps in the field with unorthodox shots. He got off the mark in Test cricket with an uppercut for four, and he reverse-swept Jomel Warrican against the turn for a boundary in the last over of day one.

When required to, Jaiswal was able to shift a gear down and see out difficult periods. Having hit seven fours while scoring his first 51 runs off 104 balls, he hit no boundaries and scored just 19 runs off his next 80 balls, a period during which spinners Rahkeem Cornwall and Jomel Warrican beat both openers multiple times with sharp turn.

Having got through that testing spell, though, and with Cornwall off the field with a chest infection, Jaiswal opened up after lunch: he rushed from 70 to 100 in just 31 balls, hitting four fours in that period including a dancing, inside-out drive off Warrican.

Jaiswal's innings also extended a proud run for players representing his Ranji Trophy team: the last four Test-debut centurions for India have all been Mumbai batters, with Rohit, Shaw and Shreyas Iyer the three before Jaiswal.