Stan Wawrinka advanced to the semifinals of the Chennai Open with a 6-4,
6-4 win over fifth-seeded Guillermo Garcia-Lopez of Spain Friday.
The top-seeded Swiss, a two-time defending champion, fired 14 aces to set up a clash with third-seeded Frenchman Benoit Paire.
Paire also served 14 aces as he defeated Thomas Fabbiano of Italy 6-4, 7-5.