Milos Raonic has tried on coaches the same way most people shop for shirts. Maybe he had finally found a comfortable fit in new coach Mark Knowles after parting ways with former Wimbledon champion Richard Krajicek.

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In the recent past, the 26-year-old has also worked with John McEnroe, Carlos Moya, Ivan Ljubicic and Fredereck Niemeyer, to name just a few.

The 2016 Wimbledon finalist still struggles often with injures and needs added details to his game if he is to break through for his first major title.

Knowles is a former doubles world No. 1 and won three doubles Grand Slam titles during his career. He has previously coached Mardy Fish.

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This is a hire that could help the world No. 6-ranked Raonic refine his net game and improve on the progress he had last year under Moya.

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Good health, a jolt from Knowles and continued improvement could be the recipe for another deep Raonic run at Wimbledon.

Follow Jeremy on Twitter: @JeremyEckstein1