Chelsea's Kurt Zouma Stretchered Off After Nasty Knee Injury [Warning: Graphic]

Chelsea center back Kurt Zouma went down in a heap after going up for this header and coming down with knee bent the wrong way. He immediately (and audibly) began screaming, and was stretchered off the pitch.

As a warning, the video of the injury is graphic.

United would score the opening goal minutes later.

[Telemundo]