Boris Becker believes that Andy Murray is showing signs of improvement after appointing Ivan Lendl as his coach.
The Czech-born American took on the job at the start of the season and many within the game have already commented on the Scot's improved on-court mentality.
Murray is currently preparing for the French Open, which starts on Wednesday, but Becker has warned that people will not see the best of the world number four until Wimbledon.
"I think you can see the difference already on Andy's forehand, his position on the court, his attitude is much more positive and disciplined than it was before.
"Hard courts or grass are his best surface, not clay. I can't wait for Wimbledon and for him to show what he's learnt."
Becker won six Grand Slam titles during his career.
