It's no secret that fighters tend to put on a significant amount of weight between hitting the mark on the scales and stepping inside the Octagon.
Via the California State Athletic Commission and MMA Fighting, we have the actual figures for all of the fighters who competed at UFC 311 this past weekend and the results are very interesting.
Multiple fighters had an increase of 17% including three of the four men that were involved in the two title fights at the top of the card.
When you look at the specific numbers, that's where there is more information to be analysed.
For example, Reinier de Ridder only had a 15% increase but that means he gained 27.5 pounds.
It's not surprising to see him weigh significantly more than his opponent, Kevin Holland, on fight night considering that Holland has previously fought at welterweight whilst de Ridder has been cutting down since signing with the UFC.
The second highest weight gain is for the lightweight title challenger, Renato Moicano, who also used to compete at the weight class below but ended up outweighing Islam Makhachev who has spoken about moving up to welterweight for some time.
Fighters with the lowest gains are found in the heavier weight classes with Prochazka's 2% gain suggesting that his theory on competing at middleweight could be doable for him whilst heavyweight Jailton Almeida actually lost weight after stepping on the scale.
Check out the full list of fight night weight variations below as reported by MMA Fighting:
Islam Makhachev: 154.5 to 178 pounds (23.5 pounds), 17%
Renato Moicano: 155 to 181.8 pounds (26.8 pounds), 17%
Merab Dvalishvili: 134 to 156.8 pounds (22.8 pounds), 17%
Umar Nurmagomedov: 135 to 156.8 pounds (21.8 pounds), 16%
Jiri Prochazka: 204.5 to 208.2 pounds (3.7 pounds), 2%
Jamahal Hill: 205.5 to 221.8 pounds (16.3 pounds), 8%
Reinier de Ridder: 184.5 to 212 pounds (27.5 pounds), 15%
Kevin Holland: 183.5 to 190.4 pounds (6.9 pounds), 4%
Raoni Barcelos: 135.5 to 158.2 pounds (22.7 pounds), 17%
Payton Talbott: 135.5 to 158.2 pounds (22.7 pounds), 17%
Jailton Almeida: 235 to 232.2 pounds (-2.8 pounds), -1%
Serghei Spivac: 233 to 234.2 pounds (1.2 pounds), 1%
Bogdan Guskov: 205.5 to 214.4 pounds (8.9 pounds), 4%
Billy Elekana: 200 to 202.4 pounds (2.4 pounds), 1%
Grant Dawson: 156 to 179.4 pounds (23.4 pounds), 15%
Diego Ferreira: 156 to 173.2 pounds (17.2 pounds), 11%
Azamat Bekoev: 185.5 to 203.2 pounds (17.7 pounds), 10%
Zachary Reese: 185.5 to 201 pounds (15.5 pounds), 8%
Ailin Perez: 135 to 152.2 pounds (17.2 pounds), 13%
Karol Rosa: 135.5 to 154 pounds (18.5 pounds), 14%
Muin Gafurov: 136 to 151.8 pounds (15.8 pounds), 12%
Rinya Nakamura: 135.5 to 148.6 pounds (13.1 pounds), 10%
Bernardo Sopaj: 135 to 147.8 pounds (12.8 pounds), 9%
Ricky Turcios: 136 to 156.6 pounds (20.6 pounds), 15%
Tagir Ulanbekov: 125.5 to 147.4 pounds (21.9 pounds), 17%
Clayton Carpenter: 125.5 to 141.2 pounds (15.7 pounds), 13%