GENEVA — Kei Nishikori saved three straight match points in the deciding set before outlasting Kevin Anderson 2-6, 6-4, 7-6 (6) in the Geneva Open quarterfinals on Thursday.
The second-seeded Nishikori was serving at 4-5, 0-40 before rallying to beat the 62nd-ranked South African, who fired 14 aces without allowing any by his opponent.
Nishikori also trailed in the tiebreaker before creating a second match-point chance with a forehand crosscourt service return for a winner. He clinched with a forehand winner off a looping net-cord ball.
The No. 9-ranked Japanese player will face 33rd-ranked Mischa Zverev of Germany in the semifinals on Friday.
The Russian-born Zverev, who came through qualifying, beat fifth-seeded Steve Johnson of the United States 6-4, 7-5.