PORT Adelaide's performance nutritionist and strength coach Andrew Rondinelli will leave the club in October to join emerging tennis star Thanasi Kokkinakis.

Season 2015 is Rondinelli's sixth with the Power, but he developed a relationship with Kokkinakis and his coaching team when both camps trained in Dubai in 2013.

Rondinelli told said that the club was fully behind his move.

"Being at Port and working with six or seven other guys in the high performance team and in the industry generally is really good – it's hard to leave – but something I'm really looking forward to and have had heaps of support from inside the club to do," he said on the club's website.

"Tennis is generally considered a little 'old school' so hopefully my experience at Port can help develop Thanasi a little bit more in some of those areas.

"AFL is probably top-of-the-table in regards to sports science, and working under Darren (Burgess) and [head of sports science] Stuart Graham has taught me a lot of skills that I’ll be bringing along to tennis."

Rondinelli will spend six months touring with Kokkinakis and six based in Adelaide.