Wawrinka knocked out in Chennai Open quarterfinals

Japanese qualifier Go Soeda upset defending champion Stanislas Wawrinka 6-4, 6-4 in the Chennai Open quarterfinals on Friday.

Soeda will play top-seeded Janko Tipsarevic in the semifinals after the Serbian beat Belgian wild-card entry David Goffin 6-2, 3-6, 6-2.

Second-seeded Nicolas Almagro of Spain and fourth-seeded Milos Raonic of Canada will play in the other semifinal.

Almagro labored to 4-6, 7-6 (8), 6-4 win over Japanese qualifier Yuichi Sugita, while the big-serving Raonic had 15 aces to defeat Israel’s Dudi Sela 7-6 (4), 6-3.