BIRMINGHAM: Virat Kohli has insisted it will be a united India that faces Pakistan when cricket's biggest rivals meet in their Champions Trophy opener at Edgbaston on Sunday.

The build-up to India's defence of the 50-over title they won in England four years ago has been dominated by reports of a row between captain Kohli and coach Anil Kumble.

Former India leg-spinner Kumble's contract expires after the end of the Champions Trophy.

The Board of Control for Cricket in India has been criticised for advertising Kumble's job a week before a tournament featuring the world's top eight one-day international(ODI) sides got started.

But Kohli, speaking to reporters at Edgbaston on Saturday, said: "There are no problems whatsoever. The team is totally focused on the Champions Trophy."

The star batsman accused some members of the media of making mischief, adding: "They're doing their job, they're trying to create a nice livelihood.

"We're focused on our livelihood, which is on the field."

Exam pressure

Yet for all that, players on both sides have tried to label Sunday's clash as "just another game", the fact is the fixture commands the attention of millions around the world like no other.

Political rivalry means the two nations have not played a bilateral series since 2012-2013.

This decade has seen them meet in a mere nine ODIs -- a meagre return for fans on the cricket crazy sub-continent -- with India winning six to Pakistan's three.

"We don't play them often," said Kohli. "They've always been a team that can surprise any team on the day."

Kohli leads a powerful batting line-up where Rohit Sharma, Shikhar Dhawan, Ajinkya Rahane, Yuvraj Singh and MS Dhoni are all proven match-winners.

India also have plenty of bowling options, with several talented seamers vying to join spinners Ravindra Jadeja and Ravichandran Ashwin in their attack.

"There are all kinds of possibilities -- two spinners, two fast bowlers, three fast bowlers," said Kohli.

For Mickey Arthur, the Pakistan coach, this will be his first direct involvement in cricket's blockbuster fixture.

However, he insisted Pakistan were "unbelievably calm" after more than a fortnight in Birmingham preparing.

"If you've crammed for an exam, you're always on edge," said Arthur, a former coach of both his native South Africa and Australia. "You always show a lot of tension because you know you haven't done the work.

"But if you prepared properly, you'll be nervous but it will be an excited nervousness because you know you're ready. There's nothing more you could have done."

Pakistan captain Sarfraz Ahmed certainly showed no sign of pre-match nerves as he recalled how his side had only just qualified for the Champions Trophy.

"We are number eight (in the world rankings), where else can we go?" said Sarfraz with a huge grin.

"For sure they (India) will be under pressure," added the gifted wicket-keeper/batsman.

Arthur has tried to change Pakistan's 'old-fashioned' approach to ODIs and has been heartened by the progress of their batsmen especially.

"In the last year we've scored the third-most amount of 300s," he said. "I think that's testimony to the brand of cricket that we are starting to play."