Frank Ambrosio scored in the second minute last night to give the George Washington men's soccer team a 1-0 upset victory over host North Carolina in the first round of the NCAA tournament.

The Colonials (10-8-4) are 9-0-1 in their past 10 matches and will play at 16th-seeded Virginia Commonwealth on Tuesday. It was GW's first NCAA tournament victory since 1989.

The Tar Heels finished 10-9-2, but were heavily favored because of their status in the ACC, college soccer's top conference.

Ambrosio's goal was assisted by Trevor Martin, a Bethesda-Chevy Chase graduate who flicked the ball in front of the net. UNC goalie Ford Williams stopped Ambrosio's header, but the officials ruled that the ball had crossed the goal line. Sophomore goalkeeper Derek Biss made five saves for the Colonials. . . .

D.C. United's Freddy Adu, 15, scored on a penalty kick during the U.S. under-20 national team's 2-0 exhibition victory over Honduras in Fort Lauderdale, Fla.

* TENNIS: Andy Roddick pounded 15 aces to become the first player since 1998 with more than 1,000 in a season, helping him beat Guillermo Coria, 7-6 (7-4), 6-3, to wrap up round robin play at the ATP Masters Cup in Houston with a 3-0 record.

Roddick, who lost to Roger Federer in last year's semifinals, will face Lleyton Hewitt in the final four today. Hewitt high-fived a fan to celebrate a great point in his 6-2, 6-1 victory over French Open champion Gaston Gaudio.

Marat Safin beat Tim Henman, 6-2, 7-6 (7-2), to take the last semifinal spot. He will face defending champion Federer, who advanced Thursday with a victory over Carlos Moya.

Safin's victory means that the top four seeds in the tournament advanced to the semifinals for the first time since 1990, when Stefan Edberg, Boris Becker, Ivan Lendl and Andre Agassi reached them.

* GOLF: Tiger Woods held a three-stroke lead halfway through the Dunlop Phoenix in Miyazaki, Japan, hoping to end a drought that has left him without a title since February. Woods shot a 3-under-par 67 that gave him a score of 8-under 132 after two rounds in the $1.89 million event, the richest on the Japanese tour. . . .

Kirk Triplett and PGA Tour rookie Ryan Palmer each shot a 6-under 66 and moved into a tie for the lead with Nationwide Tour player Nick Watney after two rounds of the Pebble Beach (Calif.) Invitational. . . .

Annika Sorenstam kept pace with a steady charge from Karrie Webb, then pulled away with back-to-back birdies late in the second round of the ADT Championship in West Palm Beach, Fla., for a 4-under 68 that set the 36-hole record at Trump International. . . .

An international team took a 31/2 to 21/2 lead over the United States after the first round of the $3 million UBS Cup in Kiawah Island, S.C. The match-play competition features teams of 40-and-older players.

* LOCALLY: Former Orioles star Cal Ripken will lead today's Help the Homeless Walkathon in Washington. Registration and check-in begins at 7 a.m. at 3rd Street and Pennsylvania Avenue NW. The walkathon will begin at 9 a.m. on the Mall between 4th and 7th streets. Proceeds will benefit 180 organizations.

-- From News Services and Staff Reports