WWE Espanol's Twitter has since revealed the full lineup for that card, with Mysterio and Velasquez's opponents listed as Drew McIntyre and Andrade.
The event takes place one month after Crown Jewel, where Velasquez challenges Brock Lesnar for the WWE championship.
Arena Cuidad de Mexico is the building where Velasquez made his pro wrestling debut this past August, teaming with Cody Rhodes and Psycho Clown to defeat El Texano Jr, Killer Kross, and Taurus at AAA TripleMania XXVII.
The full Mexico City card, which includes wrestlers from Raw and SmackDown, currently lists eight matches:
*WWE Universal: Seth Rollins (c) vs. The Fiend
*Cain Velasquez and Rey Mysterio vs. Drew McIntyre and Andrade
*Roman Reigns vs. King Corbin
*Becky Lynch and Charlotte Flair vs. Sasha Banks and Bayley
*WWE Intercontinental: Shinsuke Nakamura (c) vs. Braun Strowman
*Kevin Owens vs. Randy Orton
*Ricochet and The Viking Raiders vs. The O.C.
*Rusev vs. Bobby Lashley