Last night on Raw, Dominik Mysterio replaced his father Rey in a previously announced match against Seth Rollins.
This is due to the fact that Rey Mysterio suffered a potentially serious injury at WWE Payback when he tore a tricep muscle in a tag team match with his son against Rollins and Murphy.
WWE.com reported the injury with no word given on the length of time Mysterio is expected to miss. Frustratingly for both he and his son, a torn tricep is not an injury that can be rushed for fear of making the injury more severe and longstanding. A layoff of several months is likely, especially with Mysterio advancing in years, making a recovery much more delicate than in a younger athlete.
With Dominik receiving rave reviews for the start to his wrestling career, it remains to be seen whether he will remain on screen whilst his father recovers.