#3 Sami Zayn is a filler feud for Roman Reigns
As much as we hate to say it, Sami Zayn may only amount to a filler feud for Roman Reigns. For starters, the heel vs heel dynamic isn't something that WWE likes to do very often.
It's interesting because last year around this time, Roman Reigns was feuding with Kevin Owens for the Universal Championship. This year, it will be Sami Zayn. However, don't expect the Roman Reigns-Sami Zayn feud to be a long, drawn-out one.
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To get a title shot against Roman Reigns on pay-per-view, Sami Zayn has to wait a little over a month at least, as Day 1 takes place on January 1st, 2022, and December has no pay-per-views.
We can't see the Roman Reigns-Sami Zayn rivalry going that far. In all likeliness, it will be a small feud on SmackDown that ultimately culminates on television as well in a potentially quick match and win for The Tribal Chief.
WWE may simply be using Sami Zayn as a filler opponent until late 2021.