Dew returned two weeks ago from a hamstring injury but it is unknown if a recurrence of the injury is the reason for his late omission.
Clarke comes in for what will be his eighth game of the season.
West Coast are unchanged.
Hawks late change: Clarke for Dew
Stuart Dew has been replaced by Tim Clarke for Hawthorn in Friday night's match against West Coast
Dew returned two weeks ago from a hamstring injury but it is unknown if a recurrence of the injury is the reason for his late omission.
Clarke comes in for what will be his eighth game of the season.
West Coast are unchanged.
