Sports pictures of the week, December 13

Newcastle, England, December 8: Obafemi Martins celebrates scoring for Newcastle against Birmingham City Photograph: Lee Martin/Action Images

Fuessen, Germany, December 8: Scotland's Peter Smith in action during the 2007 European curling championship Photograph: Karl Josef Hildenbrand/EPA

Manchester, England, December 8: Derby County's Tyrone Mears and Manchester United's Wayne Rooney compete for the ball during their Premier League match Photograph: Martin Rickett/PA

Buenos Aires, Argentina, December 8: Facundo Pieres (left) of Ellerstina and Lucas Monteverde compete for the ball during the final of the 114th Polo Open Photograph: Alejandro Pagni/AFP

Salt Lake City, Utah, USA, December 8: Germany's pilot Andre Lange leaps into his team's sled at the men's four man bobsled world cup Photograph: Douglas C. Pizac/AP

Korat, Thailand, December 9: Nikita Dacera of the Philippines competes in the 400m freestyle at the south-east Asian games Photograph: Philippe Lopez/AFP

Korat, Thailand, December 9: Kritphet Niwat attempts a snatch lift in the final of the men's weightlifting Photograph: Bay Ismoyo/AFP

Las Vegas, Nevada, USA, December 9: Floyd Mayweather lands a blow on Ricky Hatton during their WBC welterweight title fight Photograph: Jae C. Hong/AP

Dijon, France, December 11: South Korea's Seongok Oh throws the ball during a group two match against Hungary in the women's handball world championship Photograph: Laurent Cipriani/AP

Kuala Lumpur, Malaysia, December 9: Germany's Matthias Witthaus (right) fights for the ball with Bevan George of Australia during the final of the men's hockey Champions' Trophy. Germany won the match 1-0 Photograph: Ahmad Yusni/EPA

Szymbark, Poland, December 9: A competitor crests a rise during Poland's national dog sledding championships Photograph: Krzysztof Mystkowski/AFP

Middlesbrough, England, December 9: Emmanuel Eboue of Arsenal can't believe what he's seeing during his team's away game against Middlesbrough Photograph: Julian Finney/Getty

Reading, England, December 9: Perpignan and London Irish clash as a scrum breaks down during their European Cup rugby match Photograph: Leon Neal/AFP

Colombo, Sri Lanka: Sri Lankan bowler Lasith Malinga delivers a ball during the second day of the second Test. England go into the third match of the series 1-0 down Photograph: Deshakalyan Chowdhury/AFP