#2 Finn Balor
Finn Balor got a massive push after his main roster debut. He became the first ever Universal Champion at SummerSlam 2016 by defeating Seth Rollins. However, he suffered a massive shoulder injury at the hands of Seth Rollins when Seth power-bombed him on the barricade.
Finn Balor relinquished his Universal title the next night on Monday Night Raw. The injury kept him out of wrestling for several months. After his return from injury, Finn lost all his momentum, and WWE treated him as a mid-card superstar.
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Balor became Intercontinental Champion this year at Elimination Chamber by defeating Bobby Lashley and Lio Rush in a handicap match.