Undercard filled out for Mayweather-Marquez

Two world championship fights will support Floyd Mayweather Jr.'s comeback fight Sept. 19 against Juan Manuel Marquez at the MGM Grand Garden.

Chris John (42-0, 22 knockouts) will defend his WBA featherweight title against Rocky Juarez (28-4-1, 20 KOs) in a rematch of their Feb. 28 fight in Houston, which ended in a draw. Michael Katsidis (25-2-1, 21 KOs) will face Vicente Escobedo (21-1, 13 KOs) for the WBO interim lightweight title, which Marquez vacated to face Mayweather.

Both fights are scheduled for 12 rounds.

Also on the card will be a 10-round fight between welterweights Zab Judah (37-6, 25 KOs) and Antonio Diaz (46-5-1, 29 KOs) at a catch weight of 144 pounds.


Venus Williams stunned early at Rogers Cup

Venus Williams' tuneup for the U.S. Open hit a surprising roadblock Tuesday with a 1-6, 7-5, 6-4 loss to Ukraine's Kateryna Bondarenko in the second round of the Rogers Cup.

Williams, seeded third, lost to an opponent ranked No. 64. Williams was playing at this tournament for the first time since 1997, when she was 17.

Kim Clijsters beat Elena Baltacha 6-3, 6-4, advancing in her second tournament since taking more than two years off to have a child.

Ana Ivanovic, seeded 11th, rallied past Magdalena Rybarikova, 2-6, 6-3, 6-2. Ivanovic, seeking her first WTA Tour title of the season, had seven double-faults against Rybarikova, ranked No. 47.


Rogge outlines his plan when final term ends

IOC president Jacques Rogge plans to resign as an active member of the Olympic committee after his final presidential term ends in 2013, preferring to serve as an "honorary president."

The 67-year-old Belgian, who was elected president in 2001, is seeking a second term at the International Olympic Committee session in Copenhagen in October. As the only candidate, his re-election is a formality.

Also: Women's boxing is in. So how about women's ski jumping in the Olympics?

That's what a group of female ski jumpers pitched in a letter to IOC president Jacques Rogge, urging him to include their sport in the Vancouver Games.

The female jumpers have gone to court, arguing that exclusion from the Vancouver Olympics violates the Canadian Charter of Rights and Freedoms.

The IOC voted last week to include women's boxing on the schedule for the 2012 London Games. Adding women's boxing means all 26 sports at the Summer Games have female and male competitors.

Ski jumping and Nordic combined -- which includes ski jumping and cross-country skiing -- are the only Winter Olympic sports that don't include women.


Sprint Cup's Vickers gets contract extension

Brian Vickers was rewarded for his Sprint Cup win at Michigan with a multiyear contract extension from Red Bull Racing.

Talks about a new contract had been ongoing for several months, with Vickers insistent he wanted to stay with the team. Although verbal agreements had been made, Austria-based ownership had been slow to present paperwork that would have finalized a deal.

It finally came two days after Vickers' stretched his final tank of fuel to the first victory for Red Bull. The pole sitter won Sunday when leader Jimmie Johnson ran out of gas with two laps left, giving Vickers the second Sprint Cup win of his career.

Also: Detroit Red Wings general manager Ken Holland said he has signed veteran forward Todd Bertuzzi.

Bertuzzi signed a $1.5 million, one-year contract with Detroit, where the 34-year-old played during the 2006-07 season.

Minor league pitcher Darin Downs remains hospitalized in Birmingham, Ala., after getting struck in the head by a line drive Monday in the Double-A Montgomery Biscuits' game against the Birmingham Barons.

The left-hander was in serious but stable condition, according to the Tampa Bay Rays.

The Toronto Raptors completed a trade with the Bucks, sending Carlos Delfino to Milwaukee as part of a four-player deal.

Toronto acquired forward Amir Johnson and guard-forward Sonny Weems and sent Roko Ukic to Milwaukee along with Delfino, who spent last season in Russia.