UPDATE: Heyward has returned to the game.
Things went from bad to worse for the Pittsburgh Steelers after the Kansas City Chiefs extended their lead to 29-10 against the Pittsburgh Steelers early in the fourth quarter, as DL Cameron Heyward remained on the field after the play with an injury. Heyward was treated on the field by trainers, and he seemed to grab for his ankle or knee.
Heyward was up and walking up off the field slowly, per Steelers.com Dale Lolley on Twitter.
Heyward up and walking off on his own.