Ana Guevara of Mexico won the 400-meter race at the World Athletics Final yesterday in Monte Carlo, ending Olympic champion Tonique Williams-Darling's unbeaten streak and avenging a loss at the Athens Games.

Williams-Darling had not lost a race, or even a heat, since March and was going for an 11th straight race victory. But Guevara, the world champion and runner-up in Athens, was timed in 50.13, followed by Americans Monique Hennagan (50.20) and DeeDee Trotter (50.60).

Williams-Darling, of the Bahamas, faded in the stretch and finished sixth, more than a second back.

On the meet's last day at Louis II Stadium, Asafa Powell of Jamaica followed Saturday's win in the 100 by dominating the 200, ahead of Frankie Fredericks of Namibia and Stephane Buckland of Mauritius. Powell won in 20.06, with Fredericks at 20.31 and Buckland at 20.41.

Veronica Campbell ensured more success for Jamaica, taking the 100 in 10.91. Countrywoman Aleen Bailey was next in 11.16, followed by American Lauryn Williams in 11.21. Williams was the Olympic silver medalist.

Qatar's Saaeed Saif Shaheen easily won the 3,000 steeplechase in 7 minutes 56.94 seconds. Olympic champion Joanna Hayes won the 100 hurdles, beating American countrywoman Jenny Adams by one-tenth of a second. Hayes finished in 12.58.

In the women's 800, Olympic silver medalist Hasna Benhassi of Morocco won in 2:01.42. American Jearl Miles Clark was second.

Bershawn Jackson won the men's 400 hurdles, holding off countryman James Carter. Jackson set a personal best of 47.86.

Ivan Heshko edged Kenya's Alex Kipchirchir to win the 1,500 meters. In the long jump, Ignisious Gaisah of Ghana beat American Dwight Phillips. Sweden's Stefan Holm won the high jump.

* TENNIS: In Beijing, Marat Safin won his first title in two years, beating Mikhail Youzhny, 7-6 (7-4), 7-5, in an all-Russian final.

Safin, a former U.S. Open champion who has been struggling since an injury-plagued 2003, advanced to No. 8 in the world and increased his chances of qualifying for the Masters Cup.

Safin, seeded fifth, had been without a title since the 2002 Paris Indoors. Justin Gimelstob and Graydon Oliver won the doubles title over fellow Americans Alex Bogomolov Jr. and Taylor Dent. . . .

In Delray Beach, Fla., unseeded Ricardo Mello won his first ATP Tour title, beating top-seeded Vincent Spadea, 7-6 (7-2), 6-3, in the final of the Millennium International Tennis Championship.

The 23-year-old Brazilian beat the three top-seeded players. . . .

In Bucharest, Jose Acasuso of Argentina captured the Romania Open with a 6-3, 6-0 rout of Igor Andreev of Russia.

* HORSE RACING: In Elmont, N.Y., Sightseek won the $300,000 Ruffian Handicap, rolling to an 111/4-length victory and improving to 5 for 5 at Belmont Park.

Sent off as the 1-5 favorite against four overmatched rivals, the 5-year-old mare took the lead just past the quarter-pole and ran effortlessly under John Velazquez as she increased her advantage with every stride. . . .

Favorite Soaring Free beat Perfect Soul by a length to win the $1 million Atto Mile on the turf at Woodbine Racetrack in Toronto. The runner-up by a half-length in last year's Atto, Soaring Free broke sharply at the final turn, winning in a stakes record 1 minute 32.72 seconds. . . .

Twist and Pop took command midway through the turn and scored a 13/4-length victory over Paisley Park in the $65,000 Lighthouse Stakes at Monmouth Park in Oceanport, N.J. Twist and Pop, a 5-year-old mare, covered the mile and a sixteenth over a fast track in 1:43.3 to give jockey Elvis Trujillo his first stakes win.

* FOOTBALL: The New Mexico Highlands Cowboys snapped the longest active losing streak in NCAA Division II football Saturday at 25 games with a 41-24 victory over Mesa State, which started the season ranked No. 12th. The Cowboys are coached by John Fassel, the son of former New York Giants coach Jim Fassel.

* BASKETBALL: DeMatha guard Mamadi Diane, a 6-foot-5 senior who averaged 10.5 points per game last season, yesterday told Virginia coaches that he will accept a scholarship to play for the Cavaliers, the player's father, Mori Diane, said.

-- From News Services

and Staff Reports

Mexico's Ana Guevara, left, crosses line ahead of Monique Hennagan of U.S. to win 400-meter race at the World Athletics Final in Monaco.