appear with the remaining members of The Nexus and the group quietly dissolved that month, turning Punk face. At Money in the Bank, Punk defeated Cena to become the WWE Champion on his final night under contract with WWE. The match received a five-star rating from Dave Meltzer, marking Punk's second performance to attain a five-star rating. The match is also considered one of the greatest professional wrestling matches of all times. On July 21, Punk made a surprise appearance at a joint WWE–Mattel panel at San Diego Comic-Con, where he mocked new chief operating officer Triple H and offered WWE Championship tournament finalist Rey Mysterio a match for the WWE Championship as long as it was in Punk's hometown of Chicago. Punk appeared at July 23's All American Wrestling show, showing respect to Gregory Iron, a wrestler with cerebral palsy. Mysterio won the WWE Championship tournament on the July 25 episode of Raw only to lose it to Cena later that night. After Cena's victory Punk returned and upstaged the new WWE Champion's celebration while also entering into a title dispute. Triple H later upheld both Punk and Cena's claims to the WWE Championship as legitimate and scheduled the two to a match at SummerSlam to decide the undisputed WWE Champion. At SummerSlam on August 14, Punk won, but he lost the title minutes later to Alberto Del Rio, who had cashed in his Money in the Bank contract after Kevin Nash attacked Punk. The night after SummerSlam, Punk accused Nash of conspiring with Triple H to keep Punk away from the WWE Championship. After repeated confrontations, Nash and Punk demanded to face each other at Night of Champions, to which Triple H acquiesced, but after Punk's repeated verbal attacks towards him and his wife Stephanie McMahon, Triple H booked himself to replace Nash. At Night of Champions, Punk lost a no disqualification match to Triple H after Nash, The Miz and R-Truth attacked both men. Miz and Truth also attacked Punk on October 2 at Hell in a Cell after he lost a WWE Championship triple threat Hell in a Cell match to Del Rio. Punk attempted to avenge this by teaming with Triple H against Miz and Truth on October 23 at Vengeance, but they lost due to Nash attacking Triple H. This helped transition Punk's anti-establishment voice from Triple H to John Laurinaitis, who became the