THE WESTERN Bulldogs will likely be without All Australian hopeful Caleb Daniel for the next month, after the diminutive defender injured his hamstring on the weekend.

Daniel, who has been in fine form since an off-season switch into the backline, sustained the setback in the final quarter of the club's upset win over Port Adelaide on Saturday night.

"We didn’t want to take any risks with Caleb, so he sat out the last 15 minutes of the game," medical service manager Chris Bell said.

"Further assessment today has confirmed that Caleb has suffered a moderate grade hamstring injury.

"This will see him on the sidelines for the next three to four weeks."

FULL INJURY LIST Who's ruled out and who's a test?

Daniel has been averaging 27.4 disposals per game this season, with his dash and kicking ability off half-back putting him in the frame for a maiden All Australian blazer.

There is better news for the Dogs, with midfielder Mitch Wallis set to return from an ankle injury this weekend, while veteran defender Dale Morris completed his remarkable recovery from an ACL injury sustained just 106 days ago by getting through a VFL hitout unscathed.