Ivan Lendl has said that he expects Andy Murray to achieve more in 2013 than last year.
The Scot won his first Grand Slam tournament in 2012, as well as collecting the gold medal at the London Olympics.
However, his coach told Sky Sports News: "Obviously it was a fantastic year for Andy but I always look for more.
"That's how you get better, by looking for more. The moment you get satisfied is when the dangers come. I know he wants to look for more too."
Murray has already had success this year, having defended his title at the Brisbane Open last week.
His Australian Open campaign begins against Dutchman Robin Haase.
