Jim Courier, Stefan Edberg, Boris Becker and Guy Forget won quarterfinal matches Friday at the Donnay Indoor Championship.
Courier scored a 7-6 (8-6), 7-6 (7-5) victory over Alexander Volkov. He will face Forget in the semifinals. Forget ousted Ivan Lendl 6-2, 7-6 (7-4).
Edberg had little difficulty in disposing of Karel Novacek 6-2, 6-1 to advance to a semifinal match with Becker.
Becker defeated Carl-Uwe Steeb 6-3, 7-6 (7-3) in 94 minutes.