#2 Tommaso Ciampa turns on Johnny Gargano - WWE 2017
DIY became the greatest babyface tag team in NXT history and one of the best babyface tag teams in all of WWE. Tommaso Ciampa and Johnny Gargano were thrust together and were able to mesh so well with one another. Despite their first-round match in the Cruiserweight Classic, they didn't allow doing battle to stop them from achieving success together.
Ciampa and Gargano overcame setbacks and finally defeated The Revival for the NXT Tag Team Championships at TakeOver: Toronto in a classic two out of three falls match. DIY's run with those straps were short-lived when The Authors of Pain beat them for the titles at the very next TakeOver.
After another crushing loss to The AOP in a Ladder Match at TakeOver: Chicago, Ciampa pulled off a masterful heel turn on Johnny Wrestling, breaking the hearts of all their fans. Gargano was psychologically damaged after this betrayal and needed to go on a journey to find himself and finally win gold in WWE.
After feeling like he had come into his own and earned a shot at the NXT Championship, Johnny Gargano lost to Andrade Cien Almas in an amazing encounter at TakeOver: Philadelphia. Tommaso Ciampa returned after the match, nailing his former partner in the back with a crutch. This set the stage for their showdown during WWE's biggest weekend.
Gargano defeated Ciampa in a phenomenal unsanctioned match at NXT TakeOver: New Orleans. This was just the start of the best feud in the company at that time. They met at the next two TakeOver events with Ciampa coming out on top. Although they never came to their proper conclusion, DIY would reunite and battle again. This will always be remembered as NXT's greatest rivalry ever.