Ruf (knee) will begin a minor-league rehab assignment Tuesday with Triple-A Nashville, Adam McCalvy of MLB.com reports.

Ruf has a non-displaced fracture of his patella in addition to a deep laceration in his right knee, Adam McCalvy of MLB.com reports.

The Brewers transferred Ruf (knee) from the 10-day injured list to the 60-day IL on Monday.

The Brewers placed Ruf on the 10-day injured list Saturday with a right knee laceration.

Ruf was pulled from the Brewers' game against Cincinnati on Friday due to a right knee laceration, Curt Hogg of the Milwaukee Journal Sentinel reports.

Ruf was pulled from Friday's game against the Reds with an apparent injury, Adam McCalvy of MLB.com reports.

Ruf is not in the starting lineup Wednesday against the Blue Jays.

Ruf is serving as the Brewers' designated hitter and batting leadoff Tuesday night against the Blue Jays.

Ruf signed a one-year contract with the Brewers on Monday.

Ruf cleared waivers and elected free agency Saturday, Maria I. Guardado of MLB.com reports.