The upcoming episode of WWE SmackDown will be the go-home edition of the show ahead of Saturday Night's Main Event XLII in Washington, D.C. Hence, the Stamford-based promotion is likely to focus on wrapping up storylines and building up anticipation for the forthcoming event.Besides being billed as John Cena's retirement match, SNME XLII will also feature some exhibition clashes and will include stars from NXT. While the creative team has prepared an exciting lineup for the marquee event, there is a possibility that they might add more matches to the card tonight during the blue brand show.Now, let's explore three SNME matches that WWE could add during SmackDown.#3. NXT Women's Champion Jacy Jayne vs. WWE Women's Champion Jade CargillJacy Jayne was able to reclaim the NXT Women's Championship by defeating Tatum Paxley at Gold Rush on November 18, after previously losing the gold to Paxley earlier this year at Halloween Havoc. As a result, she now holds the status of a two-time NXT Women's Champion.Since Oba Femi has earned an opportunity to face Undisputed WWE Champion Cody Rhodes at Saturday Night's Main Event XLII after regaining the NXT Championship at Deadline, the creative team is also likely to book a match for Jayne at the upcoming event, perhaps against WWE Women's Champion Jade Cargill.To pull the trigger on this move, the authorities might have Jacy confront Cargill on the upcoming episode of SmackDown. This could then set the stage for a showdown at SNME XLII. Since the duo has seemingly gained a lot of momentum on their respective brands, they could make for a blockbuster clash on Saturday.#2. United States Title open challengeThe United States Championship has not been defended in a WWE Premium Live Event for a long time. Therefore, it makes sense if the Stamford-based promotion considers changing that in the upcoming episode of SmackDown.Considering that Saturday Night's Main Event XLII won't be like the traditional SNME, the creative might announce tonight that Ilja Dragunov would issue a US Title open challenge at the upcoming event after he potentially retains the gold against Tommaso Ciampa. If this happens, it could add more prestige to the title.#1. Ethan Page vs. Damian PriestEthan Page has achieved notable success in NXT within just over a year of signing with WWE. He is the reigning NXT North American Champion and also one-half of the AAA World Mixed Tag Team Champions, alongside Chelsea Green.In a massive turn of events on the upcoming edition of the blue brand show, Page might be booked to interfere in the Mixed Tag Team Match and cost Rhea Ripley and Damian Priest their bout against Aleister Black and Zelina Vega. Interestingly, he could then challenge Priest to a showdown at Saturday Night's Main Event XLII.