Kyle Edmund

With Andy Murray’s future still uncertain, the hopes of a nation will be on the shoulders of 24-year-old Edmund this summer.

Andrew Castle’s verdict: “Kyle is already a celebrated and world-class player. I think he’ll take following in the footsteps of Andy Murray in his stride. The biggest issue he’s got is there’s only two or three weeks of grass-court tennis. He’s not grown up with a lot of play on grass and because of that his game is suited to harder surfaces. He’s got a forehand that’s as big as anybody’s in the game though. He could knock a wall down with it.”

Marin Čilić

A patchy 2019 for the Croatian could be given a boost when he takes to the court at a venue that he’s very familiar with.

Andrew Castle’s verdict: “When you’ve won twice at Queen’s you can’t be taken lightly. And Čilić has definitely got the tools to go all the way again at Queen’s. But grass courts can change from year to year, so you don’t always know what you’re going to get. That’s true of a lot of players.”

Nick Kyrgios

Controversial? Yep. Supremely talented? You bet. Following his recent outburst at the Italian Open, the Australian doesn’t look like he’ll be mellowing any time soon.

Andrew Castle’s verdict: “He’s a fantastic player who’s capable of any height he wishes to attain. But he has quite a delicate temper! You never know what you’re going to get with Kyrgios, but on his day he can beat anybody in the world. They love watching him play in London. He’s charming and a lovely bloke, but he has a tendency to lose it on court.”

Juan-Martín del Potro

The 2009 US Open champion remains one of the most gifted (and well-liked) stars in the game. Get a grip on his injury issues and he could still seriously compete at the highest level.

Andrew Castle’s verdict: “I’m looking forward to seeing del Potro play. This is a bloke who is out of the very top drawer, but who hasn’t been able give his best for a while now because of his injury problems. But you could see him going deep into the tournament and then beyond that at Wimbledon as well. He’s one of a number of guys who could potentially win.”
 

Stefanos Tsitsipas

Don’t be fooled by the retro mane and headband – this young Greek star is among the vanguard challenging the status quo in tennis. A future Grand Slam champion? It’s likely.

Andrew Castle’s verdict: “Tsitsipas has got the tennis world more excited than any other player breaking through right now. There’s something about his poise on court. It’s world class. The way he moves onto his forehand, it’s exactly what Pete Sampras used to do. It never hurts to be tall, languid and have long hair either! If he’s playing tennis, people will watch.”