On the latest episode of RAW, LA Knight defeated Jey Uso to qualify for the final of the Last Time is Now Tournament. He is set to face Gunther on SmackDown to determine John Cena's final opponent on December 13.After suffering several setbacks, The Megastar desperately needed this wave of momentum. However, a ghost from his past could put an abrupt end to his hot streak on SmackDown. In a shocking turn of events, Roman Reigns could cost Knight his match against The Ring General.After losing to The Megastar on Monday, Jey Uso had an outburst, causing chaos around the ringside area. Jackie Redmond approached The YEET Master as he was leaving the arena, when Jey appeared to be going through a moment of self-doubt.The loss against LA Knight seems to have deeply affected Main Event Jey. To exact revenge for his cousin, Roman Reigns could appear on SmackDown and cost The Megastar a potential opportunity to be John Cena's final WWE opponent.The OTC and The Megastar had a brief rivalry a couple of years ago, which resulted in a singles match between the two at Crown Jewel 2023. While Reigns walked away with the victory, Knight impressed everyone with his performance.Moreover, WWE teased a potential third match between Reigns and Cody Rhodes in the closing moments of Survivor Series: WarGames. The OTC could pay a visit to the blue brand's show to confront The American Nightmare. While he's there, Reigns could also disrupt Knight's match against The Ring General.That said, this scenario is only speculative, and nothing has been confirmed.John Cena shares his thoughts on LA Knight ahead of the Last Time is Now Tournament finalJohn Cena will face either LA Knight or Gunther in his final match at Saturday Night's Main Event XLII on December 13. Ahead of the final of the Last Time is Now Tournament, The GOAT has shared his thoughts on The Megastar.During his appearance on The Bill Simmons Podcast, Cena praised Knight's attitude, but mentioned that he might be his "biggest hurdle.""I like the edge that LA Knight has. I like he operates on a nothing to lose sort of thing. I think many times, this is I think, he might be his own biggest hurdle, but gosh, if there's a dude willing to bet on himself, it's LA Knight, and I admire that," Cena said.It will be interesting to see who wins the tournament final on SmackDown and faces The Last Real Champion in his last match next weekend. While Gunther is considered a favorite by many, one can never count The Megastar out.