TRACK & FIELD

Botswana runner faces doping ban — Former world champion runner Amantle Montsho of Botswana faces a two-year suspension after testing positive for a banned substance, track and field officials said Wednesday. Montsho failed a doping test at the Commonwealth Games in Glasgow, which lasted from July 23 to Aug. 3. She finished fourth in the 400 meters there. Montsho tested positive for methylhexaneamine, which the World Anti-Doping Agency has listed as a banned stimulant for more than a decade. In 2011, WADA reclassified it as a “specified substance,” meaning that it was likely to be consumed inadvertently. While the drug is still banned, the automatic two-year suspension may be reduced under certain circumstances. In 2011, Montsho won the world title in the 400. She finished fourth in the event at the 2012 London Olympics.

SOCCER

Sounders star Yedlin heading to England — Seattle Sounders and U.S. national team defender DeAndre Yedlin signed a four-year deal with Tottenham Hotspur on Wednesday but will remain in the United States through the remainder of the MLS season and potentially into 2015. Both clubs announced the deal after Yedlin spent last weekend in London visiting with Tottenham officials and the sides were able to finalize the deal. Tottenham said Yedlin would join the club ahead of the 2015-16 season, but Seattle general manager Adrian Hanauer said the window for the move is still unknown. Yedlin burst onto the international scene with his performance for the U.S. at the World Cup, where he came off the bench in three of the team’s four games.

FOOTBALL

Seattle rookie Marsh to have MRI after injury — Seattle Seahawks rookie defensive end Cassius Marsh will undergo an MRI after appearing to suffer a knee injury in practice. Marsh was hurt after getting tangled in a pile during Wednesday’s practice, the final one before Seattle broke training camp. The Seahawks have a light practice today before Friday night’s second preseason game against San Diego. The team did not have any further details. Coach Pete Carroll is expected to talk after Thursday’s practice. Marsh was a fourth-round pick out of UCLA and was expected to contribute right away as a pass rusher for the Seahawks. Marsh had four tackles and a sack in Seattle’s preseason opening loss to Denver.

GOLF

Woods pulls out of Ryder Cup consideration — Tiger Woods has removed himself from consideration for a U.S. Ryder Cup captain’s pick because of back problems. Woods posted a statement on his website Wednesday, saying: “I’ve been told by my doctors and trainer that my back muscles need to be rehabilitated and healed. They’ve advised me not to play or practice now.” Woods’ season ended last week when he missed the cut by five shots in the PGA Championship, his fourth event since having surgery to alleviate pain from a pinched nerve.

BASEBALL

Rockies SS Tulowitzki out for season — All-Star shortstop Troy Tulowitzki will have surgery on his left hip Friday in Vail, Colorado, and miss the rest of the season, the Colorado Rockies said Wednesday. Tulowitzki, whose .340 batting average remains tops in the big leagues, has a torn labrum in his hip, the team said.

— From wire reports