Former world number one Tennis player Andy Murray says he has no regrets about not walking away from the sports despite missing 11 months of the year with a hip injury.

The three-time Grand Slam champion was speaking in Brisbane ahead of his return to tennis at the season-opening Brisbane International, which gets underway at the Queensland Tennis Centre on Monday.

The 31-year-old Scot, Murray, who won the Brisbane title in 2012 and 2013, enters the tournament with a world ranking of 256.

The Brisbane tournament features world number two Rafael Nadal, Japanese star Kei Nishikori and defending champion Nick Kyrgios.