Absolutely none of them featured anything against the rules! <_<
Punk beat him at MitB cleanly (Cena got distracted by someone trying to give him the win)
Punk beat him at Summerslam via Guest Ref ineptitude
Del Rio won Hell in a Cell by locking Cena out
Del Rio won LMS via Awesome Truth interference
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Thank you, Eddie Guerrero.
http://img.imgcake.com/Icon/Punkjpguh.jpg