#4 Andrade 'Cien' Almas/w Zelina Vega

Since it is an 'open' challenge, why not have some SmackDown superstars answer the challenge. After all, this would bolster the simmering rivalry between the two brands, especially for the blue one still marinating in unbelievable defeat during Survivor Series.
Not only that, if he could manage a win, then Almas might finally find a form of vindication with what has been an unfortunate main roster run. He has put on spectacular matches with some fantasy opponents, only to often come out on the losing end.
Look who just shut down all of Tony Khan's critics! More HERE.
With his value dropping, a victory in such a match and the fight between two brands to keep him could instantly push Almas the way it was rumoured not so long ago.
Even if he were to lose, then once more Almas would have given the viewers another thrilling ride. Who best to do that against than Seth Rollins, and still look supreme in a loss, the true best in the WWE (maybe even the world).