Rey Mysterio will be undergoing knee surgery next week which explains why he lost his 'I Quit' match with Chavo Guerrero on Smackdown! this week. Mysterio has been going full speed since joining WWE in 2002 and has won the
Tag Team gold four times, the Cruiserweight title three times and also won the World Heavyweight title during WrestleMania 22. The rehab period for his knee surgery will take up to five months
I also think it will help to refresh his character a little bit. After being on TV for all that time , I think his character has grown stale and it would be good if they built Chavo up more. Maybe make Chavo into the mad Mexican instead of the lovable lie,cheat, steal routine. Mysterio could then come back in a few months to try and cut him off at the pass.