Eugenie Bouchard has split from her second coach in the space of nine months after ending her partnership with Sam Sumyk.
The 21-year-old has endured a terrible season that has seen her world ranking slide from a career-high No 5 last October to her current position of 25.
The Canadian has been beaten in the first round of eight tournaments during 2015 – including the Grand Slam events of Roland Garros and Wimbledon – and has not won back-to-back matches since March.
She will be coached temporarily by Serbian Marko Dragic who will assist her at the forthcoming Rogers Cup in Toronto which will be her first event since Wimbledon.
Last November, Bouchard split from long-time coach Nick Saviano following a year in which she reached the semi-finals of three of the four grand slams, including a final appearance at SW19.
However, Bouchard will not be hiring a permanent coach as she bids to rebuild her shattered confidence.
She said: "I just feel like I haven't been quite myself, my confident, aggressive game lately and that's something that I've been working on very hard in practice.
"I have the belief and I know my skills are still there and nothing can just vanish. It's just about working hard to get back on track.
"I'm looking for someone who can help me improve all areas of my game. I think it's very important to be able to address the technical side, the tactical side, the mental side and the physical side."
Bouchard, who has lost 12 of her last 14 matches on the WTA Tour and Fed Cup, opens her Rogers Cup campaign against Swiss teen Belinda Bencic on Tuesday.