10/2/12 3:32 AM | Johan Lindahl
The year-end ATP wrap-up event in London remains the prime late-season goal for Andy Murray, with the Scot hoping for a better showing at home than he had as he fizzled out in 2011 with injury and fatigue.
The world No. 3 is resuming this week as he defends singles and doubles titles at the Japan Open. But after winning three straight Asian titles in as many weeks a year ago, he realizes he might have also compromised his fitness.
"That was a very disappointing finish to the year," the Scot said as as he prepares for a challenging start at the Ariake Colosseum against Ivo Karlovic in the first round. "I want to be 100 percent fit and healthy for that event, I want to try and finish this year well."
Murray heads a Tokyo field which includes Czech Tomas Berdych in the second seeding spot ahead of Serb and world No. 9 Janko Tipsarevic.
"I think I've improved mentally this year and physically as well," said the US Open champion and Olympic gold medalist. I've got to keep improving. At my age (25) it's important to learn and try to get better. There is a lot of depth at the top of the game, it's very strong.
"If you want to improve your ranking and win more events you have to fin ways to keep improving your game."
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