Harshal has spent the past four weeks in rehabilitation at the National Cricket Academy in Bengaluru. The first two weeks were spent working on his physical conditioning, before he resumed bowling. One of his key focus areas has been to be ahead of the curve and continue as the X-factor bowler teams yearn for.

"You're not going to be able to do that every single game, but if I can do that in two games out of five, or three games out of five, that will be a goal worth striving for."

Nearly a year on, he's emerged as a key member of India's T20I arsenal. The time off due to injury, he believes, has helped him explore different facets of his craft apart from working on their execution, which is the "tougher bit." Two of those areas are his new-ball bowling and variations in lengths.

"I've explored a little bit in terms of the lengths I can bowl with the slower ball," he explained. "Usually when I bowl the slower balls, it's mainly fuller or at the good length. But now I've started bowling more shorter slower balls which are working out very well for me. That's one thing obviously.

"I've also been working on my new-ball skills for a while. I started doing that mid-IPL. Just because in the IPL, what I was supposed to do [mainly middle-overs and death bowling], all my skills were top notch, so I didn't need to work on them.

"So, every time I'd go to practice, I'd take a new ball and start bowling with it because it's good to have a skill and not need it than the other way round,. It's just something I've been working on and if I get an opportunity, for India or for RCB [Royal Challengers Bangalore], I would love to do that."

Harshal is deeply analytical, and challenges himself to keep getting better. That the team management has been clear of what they expect of him has helped, too.

In the 30 T20s this year, he has bowled 54 overs in the middle phase for 19 wickets at an economy rate of 6.61 and 41.1 overs at the death for 18 wickets at 10.17. In comparison, in the 11 innings where he came on in the first six, he has averaged just one over per game.

"They [India coach Rahul Dravid and captain Rohit Sharma] have been nothing but supportive," Harshal said. "Whatever the team ethos is, they have taken precedence over individuals, which is a great thing.

"They told me my role exactly. They said, 'we want you to be able to bowl in all three phases, not just middle and death'. They've been bowling me once at the end of the powerplay every single game just to get used to that."

It isn't just his bowling that Harshal has been working on. He takes great pride in his ball-striking too. "My ability to bat at No. 8 is something they [team management] really value," he said.

"I have not been working a lot on my batting because of time constraints, because you're constantly in competition. But during rehab, I've had a chance to hit 500-700 balls over two-three weeks. It's something I've wanted to work on for quite a while because I really want to contribute in that capacity as well."

What has helped along the way is clarity of roles and backing from the captain and the coach. Harshal believes this is critical for individuals from a mental standpoint, because it helps in better decision-making, especially when players return from injuries.

"It does take a bit of pressure off you," he said. "Because sometimes people make foolish decisions when they're returning to play. They're either trying to do too much or trying to push too hard because they feel that their place is in danger or for whatever reason.

"But if you know for a fact the team management will remember what you've done prior to getting injured, and those performances and contributions are not forgotten, then that gives you a sense of calm or comfort that once you go back into the team - obviously you will have to perform again and again and that goes for every single cricketer - you know that you will hold that place in the team."

As Harshal looks ahead, the mention of 'World Cup' brings a smile to his face. He grew up like any other kid dreaming of playing in one, and in about a month's time, it will all come true.

"Obviously I am super excited," he said. "I will get nervous at some point, but at this point of time, I'm just excited. The two World Cups India have won in 2007 and 2011, I vividly remember where I was and what I was doing.

"After we won the World Cup, like every kid, we took our scooters and went onto the roads to dance and jump and shout. It would be great if I could play and if we end up winning the World Cup, to have that circle completed would be a great feeling. But [right now] it's going to be a lot of excitement and nervous energy."