July 7 (UPI) -- CM Punk, in a crazy turn of events, became the new Undisputed WWE Champion after facing Sami Zayn in the main event of Raw.

Zayn, who had just captured the Undisputed WWE Championship last week at Night of Champions, was originally scheduled to defend his title against Cody Rhodes on Monday.

Rhodes' rival Gunther had other plans, however, and brutally assaulted The American Nightmare backstage at the start of Raw.

Rhodes had a war of words with Zayn before Gunther suddenly appeared and performed a Powerbomb on Rhodes that sent him through a table. Gunther later kicked a car door into Rhodes' head.

Punk was then later put in Rhodes' place and faced Zayn in the main event. Raw was taking place from Punk's hometown of Chicago.