running back David Johnson was placed on injured reserve with a concussion Saturday, according to ESPN's Adam Schefter.
The 28-year-old has been an important part of Houston's offense after coming to the team in the surprising trade that sent superstar wide receiver DeAndre Hopkins to the Arizona Cardinals.
While Johnson hasn't made that trade look any better, he's posted decent enough numbers, with 408 rushing yards, 16 receptions for 161 yards and four total touchdowns.
He's largely been healthy this season, though a concussion forced him out of a Week 9 win over the Jacksonville Jaguars.