Port Adelaide is set to enter Sunday’s Showdown without the services of Chad Wingard.

The forward injured his ankle in the Power's Round 18 clash with Melbourne, following a collision with Demons defender Sam Frost.

He is expected to be sidelined for a further one to three weeks.

Port Adelaide head physio Tim McGrath said Wingard's recovery is on track. 

"Chad's rehab is coming along nicely at this stage," McGrath told portadelaidefc.com.au.

"We'll look to build him into running as soon as he is able."