Sport pictures of the week

Kailua-Kona, Hawaii, October 11: amateur triathletes start the swimming section of the Ironman World Championship Triathlon Photograph: Hugh Gentry /Reuters

Frejus, France, October 12: riders compete during le Roc Azur mountain bike race Photograph: Stephane Danna /AFP

Athens, USA, October 12: Mohamed Massaquoi of University of Georgia holds on to the ball as he drops to the field after being tackled by Tennessee player Demetrice Morley Photograph: Tami Chappell /Reuters

Weston-Super-Mare, UK, October 12: motorcyclists tumble during the solo mass race at the Weston Beach Races Photograph: Toby Melville/Reuters

Tokyo, Japan, October 12: Anna Bessonova performs with the ribbon at the Worldwide Rhythmic Gymnastics Club Championships Photograph: Yuriko Nakao/Reuters

Moscow, Russia, October 12: Marat Safin falls during his Kremlin Cup final tennis match against compatriot Igor Kunitsyn Photograph: Denis Sinyakov/Reuters

Pardubice, Czech Republic, October 12: a pack of riders jump to clear the Irish Bench obstacle during the 118th Czech Velka Pardubicka Steeplechase Photograph: Petr David Josek/AP

East Rutherford, USA, October 12: Cincinnatti Bengals' Cedric Benson surrounded by New York Jets players during their NFL game at Giants Stadium in New Jersey Photograph: Justin Lane /EPA

Birmingham, UK, October 12: Ellen Whitaker riding Cortaflex Kanselier win the Horse of the Year Photograph: Steve Parsons/Press Association

Tokyo, Japan, October 13: Japan's Kyoko Hamaguchi, blue, fights with China's Hong Yan, red, during the semi-final of the 72kg class of the women's Wrestling World Championships Photograph: Yoshikazu Tsuno/AFP

Boston, USA, October 15: a commentator sticks his head out of the scoreboard at the end of the first inning of Major League Baseball's playoff between the Boston Red Sox and Tampa Bay Rays Photograph: Mike Segar/Reuters

Moenchengladbach, Germany, October 15: Piotr Trochowski shoots at Wales' goalkeeper Wayne Hennessey during their World Cup qualifier. Germany won 1-0 Photograph: Volker Hartmann/AFP

Santiago, Chile, October 16: Argentinian player Nicolas Burdisso grimaces after being injured during their World Cup qualifying match against Chile Photograph: Claudio Reyes /EPA