Cincinnati, Aug 23 - India's Mahesh Bhupathi and Mark Knowles crashed out of the semifinals of the ATP World Tour Masters 1000 with a 4-6, 3-6 loss to second seeds Daniel Nestor of Canada and Nenad Zimonjic of Serbia.

Nestor-Zimonjic thus avenged their semi-final loss to the fourth-seeded Indo-Bahamian pair in the Rogers Cup last week.

The Canadian-Serbian pair lost their serve once, but broke Bhupathi-Knowles four times to take the match in almost an hour here Saturday.

They will take on defending champions and American brothers Bob and Mike Bryan in the final.