Leg-spinner Anthony Martin grabbed 4-36 on Monday to help spur West Indies to an emphatic 103-run victory over India in the fourth ODI at the Sir Vivian Richards stadium.
Martin was ably assisted by seamer Andre Russell (3-16) and captain Darren Sammy (2-43) as India crumbled to 146 all out in pursuit of West Indies' 249-8 off 50 overs.
The host's total had earlier been built around opener Lendl Simmons, who scored 67 off 78 balls, and Kieron Pollard's well-crafted 70 of 72 deliveries.
Simmons anchored the top order while fellow Trinidadian Pollard guided the hosts after a middle order collapse.
Seamer Praveen Kumar led the visitors with 3-37 while leg-spinner Amir Mishra claimed 2-56.
Sammy was delighted that his team could finally post a win in the series to reduce the deficit to 3-1.
"We did a lot of the things better in this game," he said. "Throughout the series, we've been improving. As long as we keep improving, I'm happy. We've still got a young team and we're still trying to find that winning mindset and today it was really good to see the guys putting out a keen effort."