Barbadian Test debutant Kyle Mayers said a strong belief in self and never giving up were keys his match-winning performance for the West Indies against Bangladesh on Sunday.

Mayers, 28, scored an unbeaten 210 and featured in a record-breaking partnership with Nkrumah Bonner as the West Indies came from behind to defeat the home side by three-wickets mere minutes before the close of play on the final day.

His unbeaten double century is the second-highest score by a West Indian batsman on Test debut. Only Lawrence Rowe’s 214 against New Zealand in 1972 was better. Mayers also became only the third West Indian batsman to score a double century in the second innings of Test match following in the footsteps of George Headley (223) and Gordon Greenidge (214 not out).

The fourth-wicket partnership with Bonner, who made 86, is the best in the second innings of a Test match and was the fifth-highest successful run chase in history, the highest in Asia.

"I am always a positive person. I always believe in my abilities and the team, and I always was positive,” said Mayers, who hit 20 fours and seven sixes during his 310-minute knock.

“We never gave up. We always said in the dressing room that we need to keep fighting. The captain and coach told the bowlers as well that you need to keep fighting on a pitch like this.”

Mayers said he was thankful for the opportunity to play Test cricket and hopes his performance proves to be an inspiration for young cricketers in the West Indies.

“It's a great feeling to be playing Test cricket. Then to go on and score a century, and then to make it a double, and then going on to win this Test,” he said.

“I would like to be thankful to my teammates, my coaches and family back home. A guy making his debut and making a double should inspire all youngsters to work hard and reach this level."