COLLINGWOOD veteran Alan Didak has been dropped for Sunday's clash with the Western Bulldogs, despite gathering 25 disposals last week.

The Queen's Birthday Monday clash with Melbourne was the 30-year-old's first full senior game of the season, after he started as the substitute against the Brisbane Lions in round 10.

Full round 12 teams

He had 15 kicks, 10 handballs and booted a goal against the Demons, but was the only Magpies player not credited with a tackle.

Didak was one of two players trimmed from Collingwood's squad on Friday night, with Adam Oxley also left out. Both have been named as emergencies.

Sam Dwyer and Jamie Elliott have come into the 22.

The Bulldogs have made three changes for the twilight match, regaining Adam Cooney, Matthew Boyd and Lukas Markovic at the expense of Mitch Wallis, Nathan Hrovat and the injured Tom Williams.

Meanwhile, Greater Western Sydney has included Zac Williams and Toby Greene for its clash with Port Adelaide at Skoda Stadium, in place of Stephen Gilham and Gerald Ugle.

The Power have brought in Matt Thomas, Matthew Lobbe and Paul Stewart for Kane Mitchell, Campbell Heath and Jarrad Redden.