Prasidh Krishna, the Karnataka seamer, has been called up to the Kolkata Knight Riders squad as a replacement for the injured Kamlesh Nagarkoti. The IPL release confirming the news did not specify the nature of Nagarkoti's injury, but other media reports have suggested he has injured his foot.

The 22-year-old Krishna has played 23 matches for Karnataka, only three of which have been in the T20 format. He has been impressive in 50-overs cricket, with 33 wickets in 19 matches at an average of 21.27 and an economy rate of 4.74, his best performances including a match-winning 3 for 37 in the Vijay Hazare Trophy final against Saurashtra in February.

Nagarkoti was one of India's brightest sparks through their victorious Under-19 World Cup campaign earlier this year, picking up nine wickets at 16.33 and clocking speeds in excess of 140kph. His performances enthused Knight Riders enough to spend INR 3.2 crore on him during the IPL player auction.

Knight Riders have also brought in Abhishek Nayar as part of their support staff. Franchise CEO Venky Mysore tweeted the news, but did not specify what Nayar's role would be.

Mumbai allrounder Nayar has mentored Dinesh Karthik, Knight Riders' captain, in the past.