Sport images of the day: Our picture editor's selection

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A horse makes its way up the gallop at Seven Barrows Stables in Lambourn, Berkshire - home to National Hunt trainer Nicky Henderson

Northern Illinois cornerback Paris Logan (right) keeps Western Michigan running back Michael Johnson out of the end zone during the first half of an NCAA football game

Austria's Tamara Tippler in action on the first day of the ladies downhill training on Raptor at the Alpine Ski World Cup in Beaver Creek, Colorado

Mississippi's Demarco Cox (left) and North Carolina's Jerome Simmons dive for a loose ball during a basketball game at the C.M. 'Tad' Smith Coliseum in Mississippi

Celtic fans cheer on their side during the Glasgow club's 3-0 defeat to AC Milan which ensured they cannot reach the knockout stages of the Champions League

Dallas Stars centre Cody Eakin (front) and Anaheim Ducks right wing Kyle Palmieri slide into the boards during the second period of an NHL hockey game in Dallas

Ajax's Joel Veltman was sent off after fouling Neymar to concede this penalty against Barcelona which Xavi scored only for the Dutch side to hang on to win 2-1

Napoli's goalkeeper Pepe Reina (right) saves a shot from Borussia Dortmund's Henrikh Mkhitaryan during the Italians' 3-1 defeat in the Champions League group stage

Sonny Bill Williams of New Zealand trains at Leigh East ahead of his side's Rugby League World Cup Final against Australia at Wembley on Saturday