The best pictures from the last 24 hours in sport

Andy Murray was pushed hard by Juan Martín Del Potro in their US Open quarter-final but the Scot eventually won through 7-6, 7-6, 4-6, 7-5 Photograph: Chris McGrath/Getty

Andy Murray was his usual pumped-up self Photograph: Matthew Stockman/Getty

Murray shakes hands with his anguished Argentinian opponent at the end of the four-hour match Photograph: Scott Heavey/Action Images

The two players have a history of on-court rancour but they seemed to settle their differences Photograph: Al Bello/Getty

Rafael Nadal will be Murray's opponent in the semi-final after the world No1 beat Mardy Fish 3-6, 6-1, 6-4, 6-2 Photograph: Shaun Best/Reuters

Members of the Minnesota delegation to the Republican National Convention in St Paul all dress in ice hockey shirts for the opening session - it's the most popular sport in the state Photograph: Craig Lassig/EPA

Bradley Dredge of Wales hits a shot during the first round of the European Masters at Crans-Sur-Sierre Golf Club in Switzerland Photograph: Andrew Redington/Getty

Kevin Keegan's training-ground parking space was empty again yesterday but Newcastle United continue to insist he is still their manager Photograph: Owen Humphreys/PA

The weather wasn't kind to England cricket fans in Cardiff yesterday. The sell-out crowd saw just three overs of the fifth one day international against South Africa at the SWALEC Stadium before yet another shower sent the players scurrying off for good Photograph: Nick Potts/PA

Very little play, but still a trophy ceremony: Kevin Pietersen celebrates winning the NatWest Series against South Africa Photograph: Paul Harding/Action Images

More rain in Wales on Thursday morning means the 11th green is waterlogged on day two of the Welsh National PGA Championship in Cardiff Photograph: Matthew Lewis/Getty

Cuba's national football team are in training ahead of their World Cup qualifying match against the United States in Havana this weekend Photograph: Enrique de la Osa/Reuters