Top-seeded Pete Sampras withdrew because of injury and fifth-seeded Aaron Krickstein was defeated in an indoor tournament, leaving only three seeded players entering the quarterfinals.

Sampras pulled out before his second-round match against Christian Bergstrom because of painful shin splints that threaten to keep him out of next week's ATP Tour World Championships.Peter Lundgren defeated Krickstein 7-5, 6-4.

Second-seeded Goran Ivanisevic and third-seeded Michael Chang had more success. Ivanisevic defeated Niclas Kulti 7-6 (10-8), 6-4 and Chang beat Jeremy Bates 6-3, 6-3.

Nationally . . .