"Kemar is a legend," said Haynes. "He has done really well for West Indies. He made a great start to his career, then had some injuries, then he worked his way back and is our leading bowler.
"He's among the best in the world. I am very pleased with his performances, not just on the field, but the way he had been guiding the younger players and the way he has been interacting with the other members of the team."
Victory in the first Test, which follows a 1-0 series win on home soil in March against England, came on the back of solid all-round displays from the batters and the bowlers, prompting the selectors to keep faith with the same squad as they head to the Daren Sammy Stadium in Gros Islet, Saint Lucia.
"It was a very good victory in Antigua," said Haynes.
"The team played really well and must be feeling really confident heading into Saint Lucia for the second match.
"We have a group of players who are very disciplined and are giving 100 per cent. Credit goes to our bowlers who worked really hard in the first Test match.
"We can't take Bangladesh lightly, they also bowled really well and were quite disciplined. I know we will try our utmost to win the second match."
West Indies squad
Kraigg Brathwaite (captain), Jermaine Blackwood (vice-captain), Nkrumah Bonner, John Campbell, Joshua Da Silva, Alzarri Joseph, Kyle Mayers, Gudakesh Motie, Anderson Phillip, Raymon Reifer, Kemar Roach, Jayden Seales and Devon Thomas.