India skipper Mahendra Singh Dhoni admitted that his teammates got complacent after polishing off the West Indies' top-order in the high-scoring first one-day international in Kingston on Friday.
India put up a massive 340 but had to toil before winning by 20 runs at Sabina Park.
"Most of the guys thought that we had won the game when they were seven wicket down, but it was a mistake and, hopefully, we won't repeat that. It was more close than thought," he said after the match.
Speaking about Yuvraj Singh, who played a magnificent knock of 131, he said, "He has matured as a batsman in the last couple of years. We rely a lot on him. He gets big runs for us in the middle-order.
Dhoni said handing Ashish Nehra the ball in the closing stages was a gamble which paid off.
"It was a gamble. We were thinking of giving that over to an off-spinner or a pacer. Finally we chose a pacer, as the ball was getting reverse swing," he said.
Losing skipper Chris Gayle was pleased with his team's showing despite the defeat.
"It was a good effort. We batted well. Darren, who was making his debut, was also impressive. Shiv played a top innings at the top," he said.
He also praised the Indian batsmen, particularly Yuvraj.
"He set up his innings well. Having said that it was a good game. It was flat track and small boundaries were there. It tough to contain batsmen like Yuvraj and Dhoni."
Man-of-the-Match Yuvraj said he exercised restrain to get set before exploding.
"I was getting used to the pace initially. After getting 25-30 runs I was comfortable. I got the momentum and played my shots. The partnership with Dinesh [Karthik] and Dhoni got us to the big total," he said.