The official weigh-ins for UFC Vegas 107 concluded with several notable issues, most prominently Maycee Barber missing the required weight for her main event bout.
Flyweight contender Maycee Barber weighed in at 126.5 pounds, exceeding the 125-pound limit (plus a one-pound allowance for non-title fights) for her scheduled match against Erin Blanchfield. Blanchfield successfully made weight at 125 pounds.
Despite the weight miss, UFC officials confirmed that the fight between Blanchfield and Barber will proceed as a catchweight bout. As a penalty, Barber will forfeit 20 percent of her fight purse.
This highly anticipated headliner was intended to showcase two potential future title challengers, with Barber ranked No. 7 and Blanchfield No. 4 in the MMA Fighting Global Rankings. However, Barber`s weight miss could significantly impact her position in the title picture, regardless of the fight`s outcome.
Maycee Barber was not the only fighter to miss weight; Allan Nascimento also came in over the flyweight limit at 127.5 pounds. His fight will also proceed at a catchweight with a 20 percent purse forfeiture.
Adding to the event`s complications, one fight was canceled on Friday morning. The previously scheduled 180-pound catchweight bout between Trevin Giles and Andreas Gustafsson was removed from the card due to an injury sustained by Giles. Giles had stepped in on short notice as a replacement for Jeremiah Wells.
Furthermore, a bantamweight fight between Ketlen Vieira and Macy Chiasson was altered to a featherweight bout. The UFC announced this change was due to weight management issues on Vieira`s side. Consequently, Vieira will forfeit 25 percent of her purse.
In better news, the lightweight co-main event fighters, top 10 ranked Mateusz Gamrot (156 lbs) and Ludovit Klein (156 lbs), both successfully made the championship weight.
UFC Vegas 107 Official Weigh-In Results:
- Maycee Barber (126.5)* vs. Erin Blanchfield (125)
- Mateusz Gamrot (156) vs. Ludovit Klein (156)
- Billy Ray Goff (170) vs. Ramiz Brahimaj (171)
- Dustin Jacoby (205) vs. Bruno Lopes (206)
- Ketlen Vieira (146)** vs. Macy Chiasson (144)
- Zachary Reese (185) vs. Dusko Todorovic (186)
Preliminary Card:
- Jafel Filho (126) vs. Allan Nascimento (127.5)***
- Kurt Holobaugh (156) vs. Jordan Leavitt (155.5)
- Bolaji Oki (155.5) vs. Michael Aswell (155)
- Rayanne dos Santos (116) vs. Alice Ardelean (115.5)
* Maycee Barber missed weight. Her fight with Erin Blanchfield will proceed at a catchweight with Barber forfeiting 20 percent of her purse.
** The fight between Ketlen Vieira and Macy Chiasson was changed from bantamweight to featherweight due to weight management issues for Vieira. Vieira forfeits 25 percent of her purse.
*** Allan Nascimento missed weight. His fight with Jafel Filho will proceed at a catchweight with Nascimento forfeiting 20 percent of his purse.
Additionally, the preliminary 180-pound catchweight bout between Trevin Giles and Andreas Gustafsson has been canceled due to a Giles injury.
Wesley Dunham 
Marcus Blakely