Carlos Alcaraz and Jannik Sinner should be wary of a key advantage 'big guy' Jack Draper will have over them at Wimbledon, insists Jamie Murray. The two-time Grand Slam doubles champion believes Draper is a genuine contender to win his first Grand Slam next month.

Alcaraz and Sinner will be the favourites for the Wimbledon crown when the tournament starts on June 30. However, British No. 1 Draper has been producing consistently excellent performances over the last year. His meteoric rise has seen him enter the world's top four, although he is now ranked No. 6. Murray, the brother of two-time Wimbledon champion Andy, thinks Draper's left-handed style could be an advantage over the world's best players on the grass courts of SW19.

"Jack Draper is an amazing competitor. He is a big guy but moves incredibly well. He has that left hand that will help him in defensive situations that maybe right-handers don't have," Murray told the BBC.

"He is having an amazing year and we are hoping he will have a great Wimbledon. He will be one of the favourites behind Sinner and Alcaraz."

Draper claimed his first Masters 1000 at Indian Wells earlier this year and looks primed to reach the latter stages of Grand Slams. He was a semi-finalist at last year's US Open. The 23-year-old has only ever reached the second round at Wimbledon but will expect to go much further this year.

A bout of tonsillitis hindered an otherwise positive run to the semi-finals at Queen's this week. However, Draper lost his cool in his defeat against Jiri Lehecka, smacking his racket into an advertising hoarding. He conceded that his behaviour had been unacceptable.

Draper added: "I haven't felt good all week. I tried my best out there to get myself up for the matches and compete my hardest. I think part of that is my ups and downs in the matches. I have been trying to get myself up for each point.

"When you're in that state, especially on the grass court against these guys who are serving and playing like that, a couple of loose points here and there, you know you're in big trouble. [The illness] had been developing over the week. I have been trying to recover and stuff, but the body doesn't want to play two-hour, 20-[minute] matches in the heat.

"Today's probably the worst I have felt. Did I think about withdrawing? No, not at all. I'll definitely give myself a break for a few days. My main goal is to go into Wimbledon as prepared as possible. I've got a week and a bit to do that. I think it's a real positive that I have been able to get four matches on the grass."