(01 of22)
Open Image ModalAustralia's Brian Kirkham, right, leads cyclists while competing in a BMX cycling men's quarterfinal run at the 2012 Summer Olympics, Thursday, Aug. 9, 2012, in London. (AP Photo/Sergey Ponomarev) (credit:AP)
(02 of22)
Open Image ModalLatvia's Maris Strombergs, foreground left, is airborne on his way to win the men's BMX cycling event at the 2012 Summer Olympics, Friday, Aug. 10, 2012, in London. Strombergs won his second straight Olympic gold medal in BMX on Friday, taking the lead out of the starting gate and never relinquishing it. (AP Photo/Matt Rourke) (credit:AP)
Maris Strombergs(03 of22)
Open Image ModalGold medalist Maris Strombergs, of Latvia, right, races away from silver Medalist, Sam Willoughby, of Australia, in the BMX cycling men's final run during the 2012 Summer Olympics in London, Friday, Aug. 10, 2012. Strombergs won his second straight Olympic gold medal in BMX on Friday, taking the lead out of the starting gate and never relinquishing it. (AP Photo/Christophe Ena) (credit:AP)
Carlos Mario Oquendo Zabala, Sifiso Nhlapo, Arnaud Dubois(04 of22)
Open Image ModalSouth Africa's Sifiso Nhlapo (105) and Belgium's Arnaud Dubois (139) avoid Colombia's Carlos Mario Oquendo Zabala (566) in a BMX cycling men's quarterfinal run during the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. (AP Photo/Christophe Ena) (credit:AP)
(05 of22)
Open Image ModalColombia's Andres Eduardo Jimenez Caicedo competes in a BMX cycling men's semifinal run during the 2012 Summer Olympics in London, Friday, Aug. 10, 2012. (AP Photo/Christophe Ena) (credit:AP)
Maris Strombergs(06 of22)
Open Image ModalLatvia's Maris Strombergs leads the competition during a BMX cycling men's final run during the 2012 Summer Olympics in London, Friday, Aug. 10, 2012. Strombergs won his second straight Olympic gold medal in BMX on Friday, taking the lead out of the starting gate and never relinquishing it. (AP Photo/Christophe Ena) (credit:AP)
Alise Post(07 of22)
Open Image ModalUnited States' Brooke Crain (32) passes Alise Post, also of the U.S., who crashed in a BMX cycling women's semifinal run during the 2012 Summer Olympics in London, Friday, Aug. 10, 2012. (AP Photo/Christophe Ena) (credit:AP)
Sam Willoughby(08 of22)
Open Image ModalAustralia's Sam Willoughby, right, leads the competition in a a BMX cycling men's semifinal run during the 2012 Summer Olympics in London, Friday, Aug. 10, 2012. (AP Photo/Christophe Ena) (credit:AP)
(09 of22)
Open Image ModalCyclists compete in a BMX cycling men's quarterfinal run during the 2012 Summer Olympics, Thursday, Aug. 9, 2012, in London. (AP Photo/Matt Rourke) (credit:AP)
Carlos Mario Oquendo Zabala(10 of22)
Open Image ModalColombia's Carlos Mario Oquendo Zabala crashes during a BMX cycling men's quarterfinal run at the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. (AP Photo/Christophe Ena) (credit:AP)
(11 of22)
Open Image ModalCyclists compete in a BMX cycling men's semifinal run at the 2012 Summer Olympics, Friday, Aug. 10, 2012, in London. (AP Photo/Sergey Ponomarev) (credit:AP)
(12 of22)
Open Image ModalNew Zealand's Kurt Pickard, in black, and Ecuador's E.A Falla Buchely, left, crash as Australia's Khalen Young jumps over them during the BMX cycling men's quarterfinal run during the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. (AP Photo/John Giles, PA) UNITED KINGDOM OUT NO SALES NO ARCHIVE (credit:AP)
Raymon van der Biezen, Liam Phillips(13 of22)
Open Image ModalRaymon van der Biezen, of the Netherlands, leads Britain's Liam Phillips in a run of the men's BMX cycling event at the 2012 Summer Olympics, Friday, Aug. 10, 2012, in London. (AP Photo/Sergey Ponomarev) (credit:AP)
(14 of22)
Open Image ModalCyclists compete in a BMX cycling men's quarterfinal runduring the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. (AP Photo/Christophe Ena) (credit:AP)
(15 of22)
Open Image ModalNew Zealand's Kurt Pickard, in black, and Ecuador's E.A Falla Buchely, yellow hat, crash during the BMX cycling men's quarterfinal run during the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. (AP Photo/John Giles, PA) UNITED KINGDOM OUT NO SALES NO ARCHIVE (credit:AP)
Quentin Caleyron, Morten Therkildsen, Emilio Andres Falla Buchely(16 of22)
Open Image ModalQuentin Caleyron (14), of France, Denmark's Morten Therkildsen (102), AND Ecuador's Emilio Andres Falla Buchely (50) compete in a BMX cycling men's quarterfinal run during the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. (AP Photo/Christophe Ena) (credit:AP)
Maris Strombergs(17 of22)
Open Image ModalLatvia's Maris Strombergs leads a BMX cycling men's quarterfinal run during the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. Strombergs, defending Olympic champion, eased into the semifinals of the Olympics BMX competition Thursday after escaping an avalanche of crashes on the challenging course at the London Velopark. (AP Photo/Christophe Ena) (credit:AP)
Emilio Andres Falla Buchely(18 of22)
Open Image ModalEcuador's Emilio Andres Falla Buchely (50), collides with Brazil's Renato Rezende, blocked from view, during a BMX cycling men's quarterfinal run during the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. (AP Photo/Sergey Ponomarev) (credit:AP)
Renato Rezende, Kurt Pickard, Edzus Treimanis(19 of22)
Open Image ModalBrazil's Renato Rezende, right, leads New Zealand's Kurt Pickard, center, Latvia's Edzus Treimanis, above, and other cyclists in a BMX cycling men's quarterfinal run during the 2012 Summer Olympics, Thursday, Aug. 9, 2012, in London. (AP Photo/Matt Rourke) (credit:AP)
Connor Fields(20 of22)
Open Image ModalUnited States' Connor Fields, left, leads other cyclists in a BMX cycling men's quarterfinal run during the 2012 Summer Olympics in London, Thursday, Aug. 9, 2012. (AP Photo/Christophe Ena) (credit:AP)
Raymon van der Biezen(21 of22)
Open Image ModalRaymon van der Biezen of the Netherlands competes during the BMX cycling seeding run at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. BMX time trial world champion Raymon van der Biezen posted the best time of the seeding runs Wednesday at the Olympics. (AP Photo/Christophe Ena) (credit:AP)
Moana Moo Caille(22 of22)
Open Image ModalMoana Moo Caille, of France competes during the BMX cycling seeding run at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Christophe Ena) (credit:AP)