AJ Styles has run WWE SmackDown for much of 2016, but his reign atop the blue brand is suddenly in danger.
John Cena's arrival may be poised to rearrange the SmackDown hierarchy. The powerhouse set his eyes on Styles' WWE Championship as soon as he stepped back onto the stage.
As a result, Tuesday's SmackDown ended the year with uncertainty lingering around Styles' future.
The show left fans wondering about a good number of other developments, too. Who helped Alexa Bliss keep the SmackDown Women's Championship around her waist? Is&n...
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