Bengaluru: Upcoming talent Karun Nair made a mincemeat of Bengal bowling with a crushing century as defending champions Karnataka comfortably took the first innings lead against Bengal in a Ranji Trophy group league encounter, in Bengaluru, on Friday.

In reply to Bengal's first innings score of 312, Karnataka riding on Karun's unbeaten 119 reached 322 for four in 83 overs at stumps on the second day.