Ever since losing the Undisputed WWE Championship to CM Punk, Sami Zayn has been screaming about injustices to anyone who will listen, as well as interfering in any match having to do with the championship that doesn't involve him.

Sick of Zayn's meddling, Punk challenged his nemesis to a championship bout just moments after retaining the title against Johnny Gargano last week on SmackDown, despite Zayn's interference.

Punk takes on "The Last Real Good Guy" when SmackDown journeys to Mexico City, Friday at 8 ET/7 CT on USA.