Ferrer faces Benneteau in Malaysian Open semis
"I was good tactically and did not give him a chance to come back into the game," Benneteau said.
Nishikori, Asia's top-ranked player, advanced when 2009 champion Nikolay Davydenko retired after losing the first set of their quarterfinal 6-4. Davydenko also pulled out of the quarterfinals here last year with an injury.
"It's sad to see him retire, but hopefully he is fine," Nishikori said.
Copyright 2012 by The Associated Press
This story is from ESPN.com's automated news wire. Wire index
MORE TENNIS HEADLINES
- Serena, Sharapova advance to Aussie final
- Murray cruises past Berdych, into Aussie final
- Williams, Sharapova won't change rankings
- Fed Cup team turns to Williams sisters, Keys