Both Superstars wrestled at Sunday's live event in Leeds as Cara defeated Curtis Axel and Jericho lost to Sami Zayn.
Regarding the fight, MLW Radio indicated that Sin Cara knocked Jericho out. They wrote on Twitter: "Hunico remains undefeated as WWE locker room refuses to accept this man as the baddest man on the planet. #Y2JKOd"
Both Jericho and Cara have been in several backstage fights over the years. Earlier this year, Cara was involved in a backstage incident with Simon Gotch while Jericho brawled with Brock Lesnar at SummerSlam this year.
Jericho isn't sporting any noticeable marks as he posted this video to Instagram: