PORT Adelaide star Robbie Gray has undergone post-season surgery to remove testicular cancer and is set for precautionary chemotherapy treatment.

The three-time All Australian, 29, is expected to recover in time to start pre-season training in November.

The news follows Melbourne forward Jesse Hogan's testicular cancer diagnosis in May.

Hogan, like Gray, had surgery to remove a tumour but did not have chemotherapy. He returned to the Demons' line-up in July after missing seven matches.

Power doctor Mark Fisher said a short course of chemotherapy treatment was a "preventative measure" to reduce the chance of cancer returning despite the successful surgery.

The club's general manager of football, Chris Davies, said players and staff would do everything necessary to support Gray and his family throughout his recovery and beyond.

"Robbie's health and wellbeing is, as always, the most important thing to us," Davies said.

"We are thankful the surgery went as well as it could have. 

"The treatment isn’t expected to interfere with Robbie's ability to begin pre-season training in November." 

Carlton defender Sam Rowe beat the same form of cancer in 2012, missing the final 20 rounds of that season after undergoing chemotherapy.

Gray averaged 19 disposals (9.1 contested) and kicked 47 goals from 23 games this season in being named to the All Australian team for a third time.