#2 The Undertaker vs Edge - World Heavyweight Championship (WWE Backlash 2008)

WWE WrestleMania XXIV saw The Undertaker win the WWE World Heavyweight Championship as he defeated Edge in the main event, whilst also extending his mythical WrestleMania undefeated streak.
Due to the assistance of his fiancee, SmackDown General Manager Vickie Guerrero, Edge was able to receive a WrestleMania rematch against The Phenom at Backlash.
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The showdown at Backlash was a tightly contested match until interference from La Famila members, Curt Hawkins and Zack Ryder, unsuccessfully attempted to cost The Undertaker the World Heavyweight Championship.
Despite interference from Hawkins and Ryder, The Undertaker surprisingly gained the victory over Edge via submission. He utilized a gogoplata submission hold to retain the WWE World Heavyweight Championship.
After the match, The Undertaker continued to apply the mystery submission hold, kayfabe injuring The Rated R Superstar. This caused Edge to be stretchered out of the arena and taken to a local medical facility.