British number one Andy Murray suffered a disappointing second round defeat at the Sony Ericsson Open in Miami.

The Scot, playing his first match of the week after receiving a bye through the first round, struggled throughout against Croatian Mario Ancic and eventually crashed out 6-2 2-6 7-6.  


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Ancic set the tone for the match by breaking Murray in his first service game - the unseeded player earning seven break points in the first set, converting one other to clinch the set.

But Murray fought back, finding his range on serve and it was he who this time claimed two service breaks to level the match and take it into a decider.

Both players dropped serve twice, but it was Ancic who came out on top after almost two-and-a-half hours on court, saving two match points - Murray double-faulting on the second - in the tie-break to win it 9-7.

"That was just a bad serve," Murray said. "It was the first time on tour that I've lost a match when I've had match points. So that's pretty disappointing."

World number one Roger Federer eased past Gael Monfils of France 6-3 6-4 in his first match of the tournament, while Andy Roddick overcame the loss of the first set before coming thorugh against qualifier Victor Troiki of Serbia.