Andy Murray 'trying to get 100% out of everything' with latest tweak says fellow former British No.1 Andrew Castle

Three-time Grand Slam champion Andy Murray is preparing for his return to action, and the the British star may be experimenting with new rackets and strings ahead of his comeback, according to retired compatriot Andrew Castle.

Murray sustained an injury at Indian Wells earlier this year, putting his status of competing at Wimbledon for the last time in doubt. However, the Scot appears to be ahead in his recovery, and has confirmed he will make his return on clay courts at a Bordeaux Challenger event next week. Although his participation at Roland Garros has not been confirmed, the 36-year old is opting to get in as much practice on clay as possible.

Castle claims Murray has switched rackets in an effort to improve

At a recent Game4Padel event, former British No.1 Andrew Castle spoke on Murray's desire to remain competitive, with Wimbledon and the Olympic Games still on his countryman's schedule.

"From what I hear he is practicing with a different racket, he is still working with the different weights of the racket and different strings," revealed Castle. "He’s still trying to get 100 per-cent out of everything. If he does call it quits this year, you just have to reflect on the most unbelievable career and hope that we all capitalize on it, which we probably won’t.”