5 WWE rivalries that also took place in other promotions 

#4 Current WWE Superstars Kevin Owens and Sami Zayn had a memorable feud in Ring of Honor

The benchmark for chemistry between two competitors in modern wrestling is @FightOwensFight vs @SamiZayn. This was in #ROH before their #WWE days. Just WOW!#KevinSteen #ElGenerico #KevinOwens #SamiZayn #WWENXT #WWERaw #SmackDown pic.twitter.com/SfnO1WMJAa

— Gary H (@garyh3k) February 13, 2021

Since they joined WWE, Kevin Owens and Sami Zayn have rarely stayed away from each other for long. While their current career trajectories don't allow much interaction between them, they still had a fun battle at Elimination Chamber 2021.

Most WWE fans are well-aware of their storied rivalry in NXT, where Owens brutalized Zayn at NXT TakeOver: Unstoppable and TakeOver: Rival. Likewise, their matches on the main roster, especially the one at WWE Battleground 2016, were highly appreciated by the fans.

The two stars have been feuding since they joined the wrestling business. The first-ever major clash between the two duo came at a Pro Wrestling Guerrilla show in 2004. After that, Owens and Zayn took forward their rivalry to Ring of Honor, where they had some of the best matches in the company's history.

Ring Of Honor World Champion Kevin Steen(Kevin Owens)dominates El Generico(Sami Zayn) during their Ladder War IV match at ROH Final Battle 2012.this was Generico's last match in ROH before heading to NXT/WWE pic.twitter.com/nioenSOjgt

— Rasslin' History 101 (@WrestlingIsKing) January 24, 2020

Their bout at Final Battle 2010 was a violent bloodbath that instantly made their feud one of the most personal conflicts in the business. In real life, though, the two men are best friends, and it's a testament to their abilities as performers that they could portray so much hatred between them.