Tennis: Murray undeterred by injury
Murray was broken twice in the first set despite serving seven aces, but levelled after breaking in the final game of the second set.
A wrist problem caused alarms in the third set but he pressed on and another late break put him on the verge at 5-3 and he served out superbly to love.
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Hide AdMurray said: "It was very difficult (the first set), I had to change my game completely. I pretty much served and volleyed for the whole of the second set because I couldn't win a point from the back of the court.
"I changed my tension, sent a few rackets back to the stringer and got them at the end of the second set and it made a difference.
"It's something I need to look to do more often, I'm going to look to improve on that for next year because on a surface like this it works so well.
"I think it threw his rhythm off a little bit. At the end of the first set I needed to change something."
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Hide AdMurray played down the wrist injury, adding: "I hit the half-volley and felt a sharp pain up my wrist. I've had a couple of problems there in the past so I got a little bit scared.
"At the end of the match it felt okay, we'll see when I cool down."
The Dunblane star next faces big-serving Croatian Marin Cilic, and said: "It's a good court for him, it's very quick , and if he serves well it'll be a difficult match. I'll have to make a better start."