Debutant Kyle Mayers scored a stunning 210 runs not out which helped the West Indies to secure the fifth-highest run chase in Test history against hosts Bangladesh in Chittagong on Sunday.
The West Indies chased down 395 to win by three wickets, with 15 balls remaining in the final hour of the first Test with a second-string team.
Mayers also shared an outstanding fourth-wicket stand of 216 with fellow Test debutant Nkrumah Bonner, who fell lbw for 86, but Mayers played with luck, aggression and fluency of strokes to see his side team over the line.
Former national and West Indies youth player and cricket commentator Colin Murray said: "What a stunning victory! It really sums up the West Indies -- brilliant one day and awful another day. It reminds us of India's victory over Australia last month with many of their first-team players not playing.
"In this Test match, we basically had a new middle-order with three players Shayne Moseley, Mayers, and Bonner making their Test debuts and Joshua Da Silva playing in only his second Test match but how well they acquitted themselves.
"Apart from Moseley, who didn't score many runs, but I thought he was unlucky. These guys showed fight, determination, heart, and courage something we have been crying out for in a West Indies team. They showed the desire to fight for the team in difficult conditions. I must admit Mayers surprised me, but his batting has improved tremendously when one looked at him in the regional games and in the CPL (Caribbean Premier League) tournament. He was actually selected in the team as a batsman so kudos to the coaching staff for making that decision.
"The debutants have now set down a marker and have made it difficult for the regulars to return to the team. However, one summer does not make a swallow. They will have to show consistency as the next time they go out to bat they will start from zero and that same fight, courage, and desire is what we will be looking for from the batsmen."
Murray added: "The bowlers played their part as well and on a spin-friendly pitch it took some good fast bowling from Shannon Gabriel and Kemar Roach to peg back Bangladesh even though the wickets went to the spinners it was a good team effort."
Baldath Mahabir, former Cricket West Indies (CWI) Director said: "Unbelievable and unlikely victory by the West Indies. Hardly anyone could have foreseen this. An inexperienced team, soundly defeated in the ODI series, in the heart of the Tigers' lair. To pull off this victory is a truly heroic performance.
"Each and every member of the unit deserves praise - those on and off the field. At different times, different team members put their hands up, but in the end, it was debutant Kyle Mayers who made the most telling contribution.
"Now 28, Mayers cricket history has its own story to tell and its own lessons to teach. West Indies Under-15, U-19, A team, Franchise player - and yet only 33 First-Class matches."
Mayers' outstanding knock - took 310 balls and included 20 boundaries and seven sixes and said to be one of the finest in modern Test cricket.
Mahabir, the president of First Citizens Clarke Road Club describes Mayers as: "A very disciplined, intelligent cricketer with a shrewd cricket brain. Mayers who plies his trade for First Citizens Clarke Road United since 2014, has been given opportunities to grow, develop and improve. He has now become the second West Indian to score a double hundred on debut, second to Sir Lawrence Rowe. Clarke Road is ecstatic now just as we were when Adrian Barath, another proud product of the club made a historic century on debut vs Australia in 2009."
Andre Lawrence, a former national player said: "This victory against all odds, is a true reflection of our immense potential as a region. A hurriedly put-together team after 12 seasoned and very experienced players withdrew, including no less than three debutants, batsmen with no form. This performance comes on the heels of the West Indies suffering an embarrassing ODI, series whitewash. This win defied all cricketing odds. Kyle Mayers on debut probably played the innings of his life together with the rest of his team-mates."