#3 He defeated both Seth Rollins and Roman Reigns in the only Shield Triple Threat match in WWE
Ever since The Shield debuted on television, we all knew that Roman Reigns was always meant to be break out as a singles Superstar. Granted that both Dean Ambrose and Seth Rollins were incredibly versatile in their own way, Vince wanted The Big Dog to take his company forward as the poster boy of WWE.
With The Shield becoming an unstoppable force on the main roster, everybody knew that one day we will see these three talented superstars collide against each other to sit at the very top of the industry. And, they did. Whilst professional wrestling fans who kept tabs on WWE's developmental system know that the three did slug it out down in FCW, but they weren't a part of The Shield back then.
Considering that the only time they clashed under Vince's wing was at Battleground 2016 for the WWE Championship, it was Dean Ambrose, who walked out of the Verizon Center as the WWE Champion.
Though the fans did expect another blockbuster collision between the three somewhere down the line, Ambrose's unfortunate departure from the WWE only suggests that we may never see something of that stature, again.