India captain Rohit Sharma on Sunday played down concerns around his fitness that were triggered by an unscheduled break that he took during his team's six-wicket win over Pakistan in a crucial group A match of the Champions Trophy here.

Rohit was seen struggling while fielding and it seemed he had pulled his hamstring. However, the skipper, who also left the field for a brief period during the Pakistan innings, said he was "okay" when asked about his hamstring in the presentation ceremony.

"Hamstring's okay at the moment," the 37-year-old said in the presentation ceremony following the win that has almost clinched a semifinal slot for India.

While the bowlers set it up by packing off Pakistan for 241, the star of the day undoubtedly was Virat Kohli, who got to his 51st ODI hundred with the winning boundary through the off-side.

Rohit was effusive in his praise for his longtime India teammate.

"Virat loves representing the country, doing what he does the best, which is what he did today. People sitting inside the dressing room aren't surprised with what he did," Rohit said.

As India closed in on victory with Kohli less than 10 runs away from his hundred, Rohit was seen gesturing to the star batter to go for the landmark with a couple of big hits.

Rohit said all the players did what was required of them.

"We started superbly with the ball. We knew wicket could get slower but backed our experienced batters to go out there and get 240. Credit goes to Kuldeep, Axar, Jadeja who have played a lot.

"(Mohammad) Rizwan and Saud (Shakeel) stitched a good stand, it was important not to let the game drift. Not to forget how (Mohammed) Shami, Hardik (Pandya), and Harshit (Rana) bowled as well. It was a good performance from the entire unit. Boys understand what kind of job is required out of them.

"It's tricky at times because not all will get to bowl. I try to figure out who's creating the most problems to the batters and make decisions," Rohit said.