Toon, a senior, missed spring practice with a problem in the same foot. Team officials said he aggravated the injury two weeks ago during the win over Nebraska.
Toon has 25 catches for 447 yards and six touchdowns this season for the fourth-ranked Badgers.
Toon's efforts weren't needed Sunday as Wisconsin walloped Indiana 59-7 to remain unbeaten.
Brian Bennett covers Big Ten football for ESPN.com.