Port Adelaide has suffered a huge blow ahead of two blockbuster Thursday night clashes with Geelong and Hawthorn, with star Chad Wingard set to miss the next fortnight with a calf injury.

The 23-year-old injured his calf at training on Tuesday, with the club confirming he will be sidelined for two weeks.

"Chad pulled up from training with some tightness, and we sent him for a precautionary scan," head of high performance Darren Burgess said.

"There was some low-level signalling there, so in line with our no-risk approach we’ll keep him out of this week and probably the week after that."

Wingard is averaging a career high 22 disposals per game so far this season and has kicked 10 goals in the Power's opening eight matches.