Pete Sampras outlasted a thunderstorm delay and a 20-point tiebreaker to beat Jan Siemerink 7-6 (11-9), 6-4 Tuesday night in a second-round match at the ATP Championship in Mason, Ohio.
Sampras, ranked No. 1 in the world for a record 272 weeks, has won 18 consecutive matches, his fourth-longest streak. He's collected three titles in that span, including Wimbledon.
"I've been on a pretty good roll," said Sampras, who had to rally after a sluggish start. "The run's not going to last forever. But I hope it lasts another 3-4 weeks."
That would put Sampras through the U.S. Open.
In other evening matches, fifth-seeded Tim Henman beat John van Lottum 6-2, 6-1, and sixth-seeded Gustavo Kuerten beat Alberto Martin 6-2, 6-3.
Sampras, Henman and Kuerten advanced to the round of 16, along with seventh-seeded Richard Krajicek, who beat Ivan Ljubicic 6-1, 6-3.
Ninth-seeded Todd Martin faced two tough sets from qualifier Ramon Delgado before rallying for a 6-4, 5-7, 6-2 victory.
In other matches, Albert Costa, the 14th seed, beat Andrew Ilie 6-4, 3-6, 6-2; No. 12 Nicolas Kiefer beat Sebastian Grosjean 7-5, 6-3; 15th-seeded Nicolas Lapentti beat Vincent Spadea 6-2, 6-2; 16th-seeded Thomas Johansson, who won in Montreal last week, retired from his match against Rainier Schuttler after aggravating a leg injury; Michael Chang beat Marat Safin 6-3, 6-4; and Jim Courier beat Goran Ivanisevic 7-6, 6-2.
At the Acura Classic in Manhattan Beach, Calif., sixth-seeded Serena Williams, playing her first tournament in two months, struggled to get by Elena Likhovtseva 4-6, 6-3, 6-1.
In other matches, seventh-seeded Barbara Schett beat Ines Gorrochategui 6-3, 6-2; No. 8 Sandrine Testud was upset by Corina Morariu 6-1, 6-3; and Lisa Raymond eliminated Wimbledon semifinalist Mirjana Lucic, 6-3, 6-1.
BOXING: The Aug. 21 WBC super-lightweight title fight between Kostya Tszyu (22-1-1, 18 knockouts) and Miguel Angel Gonzalez (43-1-1, 33 KOs) has been moved to South Florida after negotiations stalled in Las Vegas. The bout will be held at Miccosukee Indian Gaming, just outside Miami, and televised by Showtime Network.
SAILING: Time Warner vice chairman Ted Turner won the ILC-70 Maxi class at the 1999 Cowes Week regatta in Plymouth, England. Turner, 61, sailing Sayonara alongside owner and co-skipper Larry Ellison, chairman and chief executive of Oracle Corp., finished three points ahead of nearest rival Sagamore.
OLYMPICS: Russian athletes, whose bonuses for winning medals at last year's Nagano Winter Olympics have been delayed because of the nation's financial crisis, finally will receive their money. Athletes who won gold, silver and bronze medals in Nagano were promised cash bonuses of $50,000, $20,000 and $10,000, respectively.
_ Compiled from Times wires.