Kyle Busch holds off Brad Keselowski for victory at Watkins Glen

Kyle Busch won at Watkins Glen (N.Y.) International on Sunday, atoning for a year ago when he lost a sure victory on the last lap.

On a two-lap dash to the finish in the caution-filled Sprint Cup Series race, Busch held off Brad Keselowski. Keselowski finished second in this race a third straight time.

Marcos Ambrose was on the pole and dominated, but his luck at the Glen finally ran out. He was seeking his third straight Cup win at the track.

Just past the halfway point of the 90-lap race, he had to pit under caution after Busch had come in under green. That gave Busch the lead and he held on through a series of cautions over the final 39 laps.

Martin Truex Jr. finished third, followed by Carl Edwards and Juan Pablo Montoya.

Jeff Gordon entered the race with momentum in ninth place in the points standings after finishing second last week at Pocono, but his day was ruined early with a wreck on Lap 15.

He finished 36th and dropped to 13th in the standings with four races to go until the Chase for the Sprint Cup title starts.

TENNIS

Williams wins Rogers Cup

Top-ranked Serena Williams breezed to her third Rogers Cup title with a 6-2, 6-0 victory over unseeded Romanian Sorana Cirstea at Toronto. This was her eighth WTA title of the year and the 54th of her career.

She didn’t drop a set all week and lost only 22 games, almost half that total against third-seeded Agnieszka Radwanska in a semifinal that proved her only real test in this U.S. Open tuneup.

With the absence of top-five players Maria Sharapova and Victoria Azarenka, and the early exit of Wimbledon champion Marion Bartoli, all because of injury, Williams faced few obstacles in her path to the title.

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Rafael Nadal beat Milos Raonic, 6-2, 6-2, in the Rogers Cup men’s final at Montreal, spoiling Raonic’s bid to become the first Canadian winner in the event in 55 years.

Robert Bedard, the last Canadian to win what was then called the Canadian Open in 1955, was in attendance to see Nadal claim his third Rogers Cup title. The Spanish star also won in 2005 and 2008.

ETC.

Bolt regains title in 100

Olympic champion Usain Bolt restored order to the world of sprinting, regaining the 100-meter world championship title he lost through a false start two years ago.

Despite a slow start in pouring rain at Moscow, the Jamaican steadily caught up to 2004 Olympic champion Justin Gatlin. He then left the American behind with a trademark late burst of speed that still no one can match.

He won in 9.77 seconds, and Gatlin crossed second in 9.85. Nesta Carter of Jamaica took the bronze in 9.95.

Ashton Eaton of the United States won the decathlon world championship title to add to his Olympic gold medal.

He completed his collection with a season-leading total of 8,809 points in the 10-event competition.

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Emma Talley won the U.S. Women’s Amateur, beating Yueer Cindy Feng, 2 and 1, at the Country Club of Charleston in South Carolina.

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Brandon Banks turned himself in to police, the fourth and final former Vanderbilt player arrested after being indicted on five counts of aggravated rape and two counts of aggravated sexual battery involving an unconscious student at a campus dormitory in June.

Nashville police spokesman Don Aaron said Sunday night that the 19-year-old from Brandywine, Md., was being taken for blood testing before going to jail.

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Tiz Flirtatious caught Lady of Shamrock in the final sixteenth of a mile to win the $250,000 John C. Mabee Stakes for older fillies and mares by 21/4 lengths at Del Mar.

Ridden by Julien Leparoux, Tiz Flirtatious ran six furlongs on the turf in 1:17.94 and paid $3.20, $2.20 and $2.10 as the 3-5 favorite.

Lady of Shamrock returned $2.80 and $2.20, and My Gi Gi was 11/4 more lengths back in third and paid $3.20 to show.