The NFL's top-ranked rushing offense took a major hit on Tuesday.
Amid a breakout second season, Chicago Bears running back Khalil Herbert is headed to injured reserve, per the league transaction wire.
Herbert sustained a hip injury during the Bears' Week 10 loss to the Detroit Lions and his sophomore campaign is now on hiatus for a minimum of four games.
Herbert's 643 yards rushing through 10 games is top among the Bears running backs, as quarterback Justin Fields leads the team with 749 yards rushing.
Chicago's 2,017 yards rushing are the most in the NFL, and Herbert's loss is a significant one for an offense that's begun to find its way with Fields leading the attack.
Hebert, at minimum, will miss the Bears' upcoming games against the Atlanta Falcons, New York Jets, Green Bay Packers and Philadelphia Eagles. He'll be eligible to return on Dec. 24 against the Buffalo Bills.