In the main event, Alistair Overeem and Aleksei Oleinik successfully weighed in under the heavyweight limit of 265 pounds (plus one pound allowance).
The UFC Saint Petersburg official weigh-ins took place at 2 a.m. ET. See the official results below (courtesy of UFC.com):
Preliminaries (ESPN2, ESPN Deportes at 10 a.m. ET)
Movsar Evloev (146) vs. Seung Woo Choi (145)
Sultan Aliev (170) vs. Keita Nakamura (171)
Alexander Yakovlev (155) vs. Alex Da Silva (156)
Marcin Tybura (249) vs. Shamil Abdurakhimov (258)
Gadzhimurad Antigulov (204.5) vs. Michal Oleksiejczuk (206)
Magomed Mustafaev (154.5) vs. Rafael Fiziev (155)
Main Card (ESPN+ at 1 p.m. ET)
Alistair Overeem (245) vs. Aleksei Oleinik (237)
Islam Makhachev (155) vs. Arman Tsarukyan (155)
Sergey Pavlovich (254) vs. Marcelo Golm (250)
Ivan Shtyrkov (206) vs. Devin Clark (204.5)
Roxanne Modafferi (125) vs. Antonina Shevchenko (125)
Krzysztof Jotko (185) vs. Alen Amedovski (186)