Varun Bisht logged his maiden double century as Vidarbha piled up a mammoth 539 in their first innings against Karnataka on the second day of the four-day U-23 CK Nayudu Trophy match in Alur on Tuesday.

Varun, who was unbeaten on 40 overnight, received good support from the lower order and collected his runs with great freedom. His 209 runs came off 229 deliveries and included nine sixes and 20 boundaries. He added 188 runs for the eighth wicket with Sanskar Chavate, who scored a polished 56.

In reply, Karnataka reached 92/0 at the close of play. They trail by 447 runs.