Kyle Mayers became the first batsman to score a fourth-innings double-century on debut as West Indies chased down 395 runs for a stunning three-wicket win against Bangladesh in the first Test.
Mayers struck 20 fours and seven sixes in his 310-ball 210 not out, guiding the West Indies to complete the fifth highest chase in a Test and also the biggest in Asia.
Mayers, who scored 40 runs in the first innings, ended with 250 runs in the match, the second highest for a West Indies batsman on debut.
A 28-year-old left-handed batsman from Barbados, remained unbeaten on 210, including 20 fours and seven sixes, and also became only the sixth player to score a double hundred in the fourth innings of a Test.
"It's a great feeling to be playing Test cricket," Mayers, who averages about 29 in first-class cricket, said after collecting the man-of-the-match award.
"Then to go on and score a century, and then to make it a double, and then going on to win this Test.
"A guy making his debut and making a double should inspire all youngsters to work hard and reach this level."
West Indies sent a weakened squad to Bangladesh after several players, including test captain Jason Holder, opted out of the tour citing COVID-19 concerns.
Mayers' 216-run partnership with Nkrumah Bonner (86) for the fourth wicket, West Indies' highest fourth innings partnership for any wicket since 1984, proved to be the game changer.
The world-record chase of 7-418 against Australia in 2003 is the only time the West Indies have chased down a bigger total to win a Test.
Needing another 285 runs with seven wickets in hand, the West Indies began the crucial fifth day on the front foot, with Bonner pulling offspinner Mehidy Hasan over square leg for a boundary from the first ball.
Mayers and Bonner then survived several tricky moments in the first hour of the day, with offspinner Hasan (4-113) and left-arm spinner Taijul Islam (2-91) keeping the batsmen on their toes.
Mayers brought up his century off 177 balls, after getting an outside edge that flew past gully for his 13th boundary.
In doing so, he became just the eighth batsmen to hit a fourth-innings century on debut.
While Mayers chose to counterattack, Bonner opted to defend in a strategy of caution and calculated aggression that served them well.
After two disappointing sessions, Taijul Islam finally gave Bangladesh some hope, dismissing Bonner in the first over after tea.
But Mayers continued his spectacular attack and brought up his double hundred off 303 balls with a gentle punch to deep backward point for a single.
He then hit his seventh six to put the tourists on the verge of winning before pushing one off Nayeem Hasan to mid-on for a single to confirm the victory.