Wawrinka, Roger-Vasselin set up Chennai Open final

Top-seeded Wawrinka to take on 7th-seeded Roger-Vasselin in final of Chennai Open

India Tennis

France's Edouard Roger-Vasselin celebrates his win against Marcel Granollers of Spain in the semi final of the singles match at the ATP Chennai Open 2

India Tennis

France's Edouard Roger-Vasselin celebrates his win against Marcel Granollers of Spain in the semi final of the singles match at the ATP Chennai Open 2

India Tennis

Stanislas Wawrinka of Switzerland plays a shot against Canada's Vasek Pospisil of Canada in the men's singles semifinal match at the ATP Chennai Open

India Tennis

Stanislas Wawrinka of Switzerland prepares to serve to Canada's Vasek Pospisil in the men's singles semifinal match at the ATP Chennai Open 2014 in Ch

CHENNAI, India (AP) -- Stanislas Wawrinka and Edouard Roger-Vasselin registered hard-fought wins to set up the final of the Chennai Open on Saturday.

Top-seeded Wawrinka saw a resurgent Vasek Pospisil of Canada concede their semifinal at 6-4, 5-5 due to a back strain while Frenchman Roger-Vasselin sweated it out against Spanish player Marcel Granollers for a 6-2, 4-6, 6-3 victory.

The eighth-ranked Wawrinka was in for a surprise as fifth-seeded Pospisil withdrew just after he had struck rhythm following some unforced errors at crucial junctures.

Earlier in the first semifinal, seventh-seeded Roger-Vasselin made the only break of the first set in the sixth game and faced stiff resistance thereafter.

Granollers went a break up in the third game of the second set and held on, and the decider was also tight.