Nadal sees off Kiefer challenge

Rafael Nadal held off a spirited challenge from world number 129 Nicolas Kiefer to earn a place in the US Open third round at Flushing Meadows.

Third seed Nadal, still making his way back from an eight-week injury lay-off due to knee problems that left him unable to defend his Wimbledon title, had looked to be cruising to victory after taking the first set without the loss of a game.