WWE champ Seth Rollins' knee appears to buckle during match in Dublin

Work or shoot? Or in layman's terms: truth or fiction? 

WWE champion Seth Rollins appeared to suffer a knee injury Wednesday during a WWE Live match in Dublin.

Rollins was wrestling Kane when his knee appeared to buckle after a high spot from the top rope.

Struggling, Rollins nevertheless continued with the match, and went on to defeat Kane.

Though afterward, Rollins was helped from the ring.

Here's some footage from the match: