By Bill Scott Apr 4, 2009, 1:48 GMT
Miami - Andy Murray won another grudge encounter with Argentine rival Juan Del Potro, posting a 6-1, 5-7, 6-2 victory on Friday to set up a weekend final with Novak Djokovic at the Miami Masters.
Murray improved to 3-0 over Del Potro, a man against whom both previous matches have ended in bitter allegations of gamesmanship from both sides. The pair kept the protests to a minimum in Miami for a change.
Murray cut his unforced errors to the bone, committing just four in the dramatic final set, during which Del Potro stretched a three- minute injury timeout for a groin to twice that allotted time, failing in the end to salvage the match.
Murray ended it after two-and-a-quarter hours, breaking five times against the upset winner in the previous round over top seed Rafael Nadal.
An irate Roger Federer smashed a racket for the first time in memory as the normally calm Swiss stumbled to a 3-6, 6-2, 6-3 loss against Djokovic earlier.
Federer reduced his Wilson to scrap in a flash in the third game of a frustrating final set against the third seed as the Serb claimed a 3-0 lead after winning his sixth straight game in a turnaround.
At one point, Federer lost five of six service games.
'I just tried to keep my focus,' said Djokovic. 'I was on a roll in this period of the match, so I just tried to continue on playing patiently and win.'
A frustrated Federer will turn his attention to the clay season as he strives for a title this season.
'I struggled with my timing, it was a tough finish for me,' said Federer. 'I struggled heavily today.'
Djokovic reversed a run of two straight losses to Federer with his effort in one hour and 46 minutes, striking 20 winners and breaking the second seed six times.
Federer's form suddenly fell off a cliff after he won a comfortable first set in 31 minutes.
'I've had the biggest success against him on hard courts,' said Djokovic. 'But I knew also that I always started the matches quite impatiently and more aggressive than I needed to.
'That was the scenario in the first set today. Even though I served really well, I was quite nervous and making lots of unforced errors.
'But then it changed. I was just playing smarter afterwards. I just waited more, was more patient and created the opportunity to make a winner while waiting for his unforced errors.
'We kind of changed the roles, 3-2 in the second set (Djokovic broke on his fifth chance of the game) was a key game. Afterwards, I started playing much better.'
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