Houston Texans lose Brian Cushing to leg injury (GIF)

Oct 13, 2013; Houston, TX, USA; Houston Texans inside linebacker Brian Cushing (56) watches the game against the St. Louis Rams during the second half at Reliant Stadium. The Rams won 38-13. Mandatory Credit: Thomas Campbell-USA TODAY Sports
Oct 13, 2013; Houston, TX, USA; Houston Texans inside linebacker Brian Cushing (56) watches the game against the St. Louis Rams during the second half at Reliant Stadium. The Rams won 38-13. Mandatory Credit: Thomas Campbell-USA TODAY Sports /
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Oct 13, 2013; Houston, TX, USA; Houston Texans inside linebacker Brian Cushing (56) watches the game against the St. Louis Rams during the second half at Reliant Stadium. The Rams won 38-13. Mandatory Credit: Thomas Campbell-USA TODAY Sports
Oct 13, 2013; Houston, TX, USA; Houston Texans inside linebacker Brian Cushing (56) watches the game against the St. Louis Rams during the second half at Reliant Stadium. The Rams won 38-13. Mandatory Credit: Thomas Campbell-USA TODAY Sports /

The Houston Texans are in the midst of a four game losing streak that has their season in jeopardy, and they may have just lost one of their best defensive players:

The play happened after Kansas City Chiefs running back Jamaal Charles was in pass-protection and blocked low on Cushing as he was blitzing on a play, and immediately hit the ground screaming in pain.

If you recall, Cushing is already in the midst of a comeback season after suffering a season-ending ACL tear last year when he was low-blocked by a New York Jets player in a Monday Night Football game.