5 then vs. now dream matches for Seth Rollins 

#2 Seth Rollins vs. The Undertaker

Seth Rollins would have been a great opponent for The Undertaker while the Streak was still intact, regardless of the match's outcome. Starting with WrestleMania 24, The Deadman had a string of incredible matches with Edge, Shawn Michaels, Triple H, and CM Punk.

The Streak was one of the most special attractions in WWE due to its ability to generate incredible drama on an annual basis. The audience was invested in seeing The Undertaker remain undefeated at WrestleMania and popped for every near fall, even if they didn't always perceive the opponent as a credible challenger.

Given enough time, Rollins and The Phenom could've topped all the other Streak matches and had a five-star classic.

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#1 Seth Rollins vs. The Rock

The Rock might just be the greatest professional wrestler to have ever lived. He sold out every arena, always delivered on the microphone and was excellent in the ring. He also crossed over into the mainstream and became one of the biggest movie stars on the planet. It's not every day you find a performer with that kind of skill set.

The quality of in-ring work during the Attitude Era wasn't at the level it is now. The Rock would have relished the opportunity to work with an athlete like Rollins, would have presented him with an exciting challenge. The People's Champion has recently been linked with a return to the ring. Could he wrestle Seth Rollins in addition to Roman Reigns?