Port of Spain (Trinidad): Middle order batsman Rohit Sharma said that he had a career to make and a reputation to defend in the ongoing One Day International (ODI) series against the West Indies here.

"I have always said missing out on the World Cup was a personal disappointment. But I have to move on and establish myself in the present series, as well as to ensure that India's world cup reputation remains

Sharma starred with a 75-ball 68 in India's four-wicket win over the West Indies in the first ODI on Monday.

24-year-old Sharma has seen many ups and downs in a one-day career spanning over 61 matches and spread over four years but he is striving to be more consistent now.

"When you play for India it is sure that fans and media would talk about your performance. I have no problem with it. But yes I have worked extremely hard over my fitness in the last three months and I want this tour to count for me," stated Rohit.

While IPL has its share of staunch critics, Rohit terms it as a tremendous boon for him and says his conditioning in India's glamorous domestic event is the reason he did so well at Queen's Park Oval here on Tuesday.

"It was very hot and very tiring in the middle. But I am thankful for my conditioning during the IPL where things were more or less similar," he said.

Rohit termed the Queen's Park pitch as extremely sluggish where the ball wasn't coming on to the bat. The right-hander said being patient helped him master the conditions.

"With seniors not around, you certainly feel more responsible. You are expected to score runs; the entire middle order is expected to score runs," he said.

While there is a perception that India has a very average opening pair for the present tour, Rohit backed Shikhar Dhawan and Parthiv Patel.