The week in sport – in pictures

Austria's Gregor Schlierenzauer flies through the air during the FIS Ski Jumping World Cup event at the Four Hills ski jumping tournament at the Erding Arena, Oberstdorf Photograph: Lars Baron/Bongarts/Getty Images

Clare Balding gets some tips straight from the horse's mouth as Channel 4 Racing broadcasts its first programme at Nicky Henderson's Seven Barrows Stables Photograph: Alan Crowhurst/Getty Images

It's a packed house in Pasadena for the 2013 Rose Bowl game between the Wisconsin Badgers and the Stanford Cardinal which Stanford won 20-14 Photograph: John Green/ZUMA Press/Corbis

Looks like Lukas Hlava needs a few lessons in landing during the FIS Ski Jumping World Cup Photograph: Lars Baron/Bongarts/Getty Images

Sir Chris Hoy competes in the Giant Sprint Masters during the Rotterdam 6 Day Cycling at Ahoy Rotterdam Photograph: Dean Mouhtaropoulos/Getty Images

Now that's what we call a group hug. Russia's players celebrate beating Team USA in their preliminary round game during the 2013 IIHF U20 World Junior Hockey Championship in Ufa Photograph: Mark Blinch/Reuters

Switzerland's Nils Mani training ahead of the Men's World Cup downhill in Bormio Photograph: Olivier Morin/AFP/Getty Images

Richard Samuel IV of the Georgia Bulldogs is unable to recover a blocked punt in the end zone against the Nebraska Cornhuskers during the Capital One Bowl at the Citrus Bowl. Georgia, who were trailing 24-23 at half-time, went on to win the match 45-31 Photograph: Scott Cunningham/Getty Images

A multiple exposure illustrates the bowling technique of the Renegades' William Sheridan during the Big Bash League match between the Melbourne Renegades and the Adelaide Strikers Photograph: Scott Barbour/Getty Images

Zdenek Stybar slices through the water during the 'Versluys Ereprijs Paul Herygers' sprint cyclocross race in Bredene Photograph: David Stockman/AFP/Getty Images

South Africa's Jacques Kallis takes evasive action to avoid a bouncer from New Zealand's Doug Bracewell during day one of the first Test match at Newlands Photograph: Alexander Joe/AFP/Getty Images

The blood on the floor of the cage illustrates how brutal mixed martial arts fighting can be. Here Joe Lauzon, right, attempts to submit Jim Miller during their lightweight fight at Ultimate Fighting Championship 155 at MGM Grand Garden Arena in Las Vegas Photograph: Josh Hedges/Zuffa LLC via Getty Images