According to WWE.com, Seth Rollins re-injured his knee during an encounter with Samoa Joe at the conclusion of WWE Raw.
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Pro Wrestling Sheet also reports that Rollins' WrestleMania status is "up in the air" as he awaits meeting with a doctor this week.
Rollins tore his right ACL in May of last year:
And it's the same leg that appears to buckle as Joe is taking him to the ground.
According to the report, producers are exploring other options if Rollins is injured, as he was expected to face off against Triple H at the big event in Orlando.