#4 The Young Bucks vs. Super Smash Bros
The tag team division heading into Double or Nothing was stacked, but following a bout between the Best Friends and Angelico & Jack Evans, we got to see the injection of an iconic independent tag team. The Super Smash Bros may not have received the best ovation when they attacked the aforementioned 4 men, but they are one of the most prestigious teams on the independent scene, and have had big fans in the Young Bucks for quite some time.
Matt and Nick have sung their praises in interviews before, and after that introduction, it's clear they'll play a big part in this division going forward. We've seen the Bucks battle Best Friends and SCU quite a lot in Ring of Honor, so this would be quite a fresh matchup, and if AEW build the Super Smash Bros (name likely to change on this big stage), they could be the ones to wrestle The Young Bucks to crown the first ever AEW Tag Team Champions.