In an ICC podcast with former pace bowlers Ian Bishop and Shaun Pollock, Bumrah admitted, "I love bowling with Dukes. It seams, it swings, so basically when you have a little bit of help, it does help as it is difficult to be a fast bowler with grounds getting shorter and wickets getting flatter."
"So if the ball does something, it becomes even competition. So you feel you are in the game. With no help, you only have few things to play with. So I enjoy bowling most with Dukes ball," the 26-year-old went on to explain.
Bishop queried Bumrah on his outswinger, and how he made it so effective. The unconventional fast bowler stated that he has worked on the delivery over time, and the same is bearing fruit now. "I always want to bring new things. My different action, may be once or twice people will be surprised, but they will find you out. So you need to improve and keep on evolving.
"So I had the outswinger but when I came into the international set-up, I wasn't confident about it, may be it wasn't coming out well, may be the pace, you should have the feel of it. Slowly, you work on it in the nets. In the West Indies, the ball was helpful, conditions were helpful," Bumrah added.
On expected lines, Bumrah was asked about his uncanny bowling action as well as his run-up. Speaking about the same, the lanky fast bowler said that he is different because he has had no formal coaching in cricket. He stated that he has learnt things by watching television and videos.
"Basically, I have never been coached a lot. No professional coaching or camps. Till date, everything is self-taught, everything, through TV, videos. There is no proper reason for action. I have never really listened to people who told that action needs to be changed, kept on developing on strengths if I could have self belief," Bumrah revealed.
"Playing in backyard. My run-up is because of that as we didn't have so much of space, so this is the longest that you could have had, may be this could have been the case. I have tried longer run-up and nothing changes, speed is still the same so why to run so much," the world's premier fast bowler added.
--By A Cricket Correspondent