The rookie posted a series of pictures to his Instagram account in the hospital Wednesday night, including one showing a wrap on his leg. On Thursday he added an update that said it wasn't a football injury, "just had an infection."
"Josh Jacobs woke up with discomfort in his leg on Wednesday and he was evaluated and treated for a superficial skin infection," the statement said.
NFL Network Insider Ian Rapoport reported that Jacobs' surgery isn't expected to affect his status for Sunday's game against the Denver Broncos.
Jacobs has been the motor behind the Raiders' offense this season, and a leader for Offensive Rookie of the Year honors. Jacobs is eighth in the NFL in rush yards this season (1,150 yards) and leads all rookies in rushing rush yards, rushing TDs (7), and scrimmage yards per game (101.2).