Emma Raducanu has been warned to surround herself with positive influences.

Former world No. 1 Caroline Wozniacki has been encouraged by Raducanu's appointment of Mark Petchey as her coach.

But with Raducanu sifting through several trainers over the past few years, Wozniacki has urged the British star to surround herself only with trusted allies.

"She needs people around her to keep reminding her she can beat anyone at her best,” the Australian told Express Sport.

“It's good to see she's playing better, winning matches, and her body his holding up.

"I think Mark Petchey is a good coach, but most importantly for Emma, she's shown it's important that she has someone who she gets along with and brings positive energy to her camp and makes her believe that she can do it.”