Rookie Krishnamurthy Siddharth hit his maiden first class hundred, an unbeaten 104, to guide Karnataka to 263 for 4 against Mumbai on day one of the Elite Group A Ranji Trophy match here yesterday.

In the absence of mainstays Karun Nair and Manish Pandey, Siddharth, 25, stood up and shouldered the responsibility to help Karnataka recover after the loss of their openers at the KSCA Stadium here. Siddharth, who had a forgettable outing in the game against Vidarbha, made up that failure. In his 184-ball stay at the wicket so far, the batsman has struck 13 boundaries and two sixes.