PORT ADELAIDE will be forced into at least two changes to the side that defeated Geelong by 11 points at Adelaide Oval on Saturday night.

Dougal Howard and Karl Amon will both miss the clash with the Western Bulldogs through suspension.

Midfielder Willem Drew has been in great form in the SANFL since being omitted from the Power side after the Showdown.

Hard nut Joe Atley has also been winning plenty of football in the midfield for the Magpies this season.

Ruckman Peter Ladhams could be in line for a recall to the senior side, after debuting against Hawthorn in Launceston in Round 11.

Todd Marshall and Billy Frampton will also be in the frame to replace the key position Howard.

If Tom Rockliff pulls up well after the club’s main training session on Thursday, the ball-magnet will be in the selection frame.

Port’s final team will be announced on Thursday evening, ahead of Saturday night’s huge clash with the Western Bulldogs at Adelaide Oval in Round 15.