Former British Davis Cup captain David Lloyd isn’t thrilled with Andy Murray's on court appearance, saying it’s sloppy.

"If you look at Nadal, Djokovic and Federer when they come on the court, they have a demeanor," Lloyd told the BBC. "They are exceptionally well-dressed and clean-shaven. Andy doesn't come on like that."

Lloyd added that Murray is unfairly criticized, but said that he must improve his serve if wants to compete with Rafael Nadal, Novak Djokovic and Roger Federer at the majors. Murray lost to Nadal in the semifinals of Wimbledon.

"Andy is a very good tennis player," said Lloyd. "He is definitely the third or fourth best in the world, but he's not quite as good as those three guys really. It's not that he played badly - I think what happened was his serve, his first serve, when that goes in, he can beat Nadal. If Andy is going to become that slightly better player - number two or number one in the world - he has to get more percentage of first serves. Then he can win a major. Otherwise, he's not quite good enough. He hasn't let us down - he played to the best of his ability - and it's a pretty good thing."