'We were confident of Bumrah doing well in Tests' – Bharat Arun

Bumrah returned figures of 6/33 in the first innings and followed it up with a brace in the second. Arun believes that the pacer's unique action makes it difficult for batsmen to face him.

"What makes him (Bumrah) so special is because he is so unique," said Arun after the fourth day of the Test on Saturday, 29 December. "Maybe the batsmen pick up his balls a little later than which they normally do from a clean action and that makes him so much more potent.

"Of course, for any fast bowler to be bowling 145 clicks and above consistently over a period of time, you need to generate a lot of speed from your arms."

"We were extremely confident of Bumrah doing well even before he started playing Tests because he was unique and most batsmen who played against him said it was difficult to pick him," he said at the post-match conference after the fourth day's play.

"He was someone who did exceptionally well in the domestic championships as well. So, we thought we would give him a go."

The India pace attack, comprising of the likes of Bumrah, Ishant Sharma, Mohammed Shami, Bhuvneshwar Kumar, and Umesh Yadav, has garnered admiration in 2018 for their splendid and consistent performances across the globe.

When asked if this was the breakthrough year for the seamers in India, Arun said, "Definitely yes. Right from the period we started the tour of South Africa, England and right now, they (pacers) have done exceptionally well. Recently I was told that they have broken the record of West Indian trio and that speaks volumes about these fast bowlers."

"It is a combination of a lot of work, identifying what it requires to be bowling fast over a period of time; the strength-conditioning coach Shankar Basu and physio have played a major role in making these fast bowlers. I think load monitoring is extremely crucial if you want them to last over a period of time, and their inputs become extremely important. I think it is teamwork," he added.

"There have been great fast bowlers but this is the first time India has had a bunch of [great] bowlers. We had great bowlers like Zaheer Khan and Kapil Dev earlier but to have 3-4 bowlers together it really augurs well for Indian cricket. Now they have proved over this past year, they are fast, mean and they can be consistent," said.

Arun also heaped praise on left-arm spinner Ravindra Jadeja, adding that he has "matured a lot over the years".

"(Ravindra) Jadeja has matured a lot over the years, he has gained a lot of confidence and the way he has progressed today and the way he played in England, we can be quite confident that Jadeja can lead the spinning attack," Arun declared.

"In the last two years, Jadeja has been very very quick. He has learnt quite a lot and that has helped him evolve from what he was earlier," Arun added.