Dinesh Karthik and Hardik Pandya can play a vital role for the Indian team in the upcoming T20I CWC : Rahul Dravid

Both Karthik and Pandya have come up with heartening performances in the drawn five-match T20I series against South Africa, with the former scoring a match-defining half-century in Rajkot that helped the hosts level the series at 2-2. The fifth and final game at Bengaluru on Sunday was washed out.

READ: Fans brutally troll BCCI as video of the leaking roof at Bengaluru's M Chinnaswamy Stadium goes viral

"He (Karthik) is picked for a very specific skill and he was picked for that based on what he has been doing particularly well over the last two or three years," Dravid said post-match on Sunday.

"It almost came together perfectly for us in that game at Rajkot when we needed that big performance in the last five overs to be able to make a par score.

"He (Karthik) and Hardik (Pandya) batted beautifully for us and both of them are our enforcers at the end and guys that can capitalize on the last five or six overs as well as anyone in the world. It was really nice to see Karthik come off and do what he has been picked to do and it certainly opens up a lot more options for us going forward. Innings like that (in Rajkot) means he is certainly knocking very hard," added Dravid.

READ: IND vs SA: Ruturaj Gaikwad faces backlash for his 'attitude' towards ground staff in viral video

While the start of the 20-over showcase is still more than three months away, India still have many issues to iron out as they zero in on their final 15-player squad for this year's tournament.

With Virat Kohli, Rohit Sharma, Jasprit Bumrah and KL Rahul either rested or injured for the recently completed T20I series against South Africa, a host of fringe performers were given the chance to put their best foot forward during the five-match series.

India still have at least 13 T20Is to play before they fly to Australia, with matches against Ireland (two), England (three), West Indies (five) and Australia (three) slated between now and the start of the tournament on October 16.

That quartet are almost certain to feature in India`s squad that will travel to Australia at the start of October for the four-week-long tournament, but there are seemingly many spots still open for the remainder of India's touring party, according to ICC.

And Dravid wants his fringe players to perform during those warm-up matches to ensure they make their case for selection unequivocal. "I was telling the guys that they have to bang the door down," Dravid said.