Karun Nair made his 25th first-class hundred to take Karnataka to a strong position against Goa on the rain-hit second day of their Ranji Trophy Elite Group B match here on Sunday. 

Karun, who was omitted from the India Test squad after a middling series in England recently, made an unbeaten 174 off 267 balls to announce his return to the run-making ways. It helped Karnataka make 371.