WWE is just hours away from hosting its first SmackDown after Survivor Series: WarGames, and the company has lined up exciting matches for the show. One of the matches on the card is the final bout of John Cena's Last Time Is Now Tournament between Gunther and LA Knight.The latest episode of WWE RAW saw Knight shockingly advance to the finals by pinning Jey Uso in the semifinals. Meanwhile, The Ring General defeated Solo Sikoa to reach the last round.While the 43-year-old aims to defeat The Ring General tonight and face the GOAT in his retirement match next Saturday, his road to achieving this goal might be at risk. In a jaw-dropping twist, Sami Zayn and The Usos might reunite on the show in a shocking heel turn and cost LA Knight his chance of winning the tournament.Jey Uso has been in a rivalry with Knight so far this year. The two were gunning for the World Heavyweight Championship when Seth Rollins held the gold. However, it seemed that their feud paused for a while after the former United States Champion was subtly taken away from the world title picture.The bitter rivals later squared off this week on RAW in the semifinals of the Last Time Is Now Tournament, where LA Knight stole the victory. Considering that Jey Uso has no chance at CM Punk's World Heavyweight Championship, the creative team might decide to restart his feud with Knight.To develop this storyline, the Triple H-led creative team might book both Jey and Jimmy Uso to turn heel on the upcoming episode of SmackDown by costing the 43-year-old in his match against Gunther.As for Sami Zayn, he has been relatively low profile since losing his United States Championship to Ilja Dragunov on the October 17 episode of SmackDown. Hence, he might need to embrace his dark side to regain his standing on the blue brand. To spice things up, the creative team could factor him into the storyline with LA Knight to have him reunite with The Usos.The OG Bloodline trio has achieved significant success in the past with Roman Reigns as their Tribal Chief. There is a great possibility that they could achieve much more success if they reunite. However, this angle is speculative.Roman Reigns could appear tonight on SmackDownRoman Reigns kicked off a program with Cody Rhodes after the traditional Men's WarGames Match. During a promo segment on the go-home edition of WWE RAW, the OTC revealed that he will be coming after any of the world titles. This has led many to speculate that it might be the Undisputed WWE Championship, especially after his face-off with Cody in San Diego.If this is confirmed, there is a possibility that Reigns might appear on the upcoming episode of SmackDown to develop his storyline with The American Nightmare, possibly heading to WrestleMania 42.However, this angle is speculative, and fans will have to wait until the blue brand show to see if this comes to fruition.