In the main event, Derrick Lewis and Aleksei Oleinik will have to hit the 266-pound heavyweight limit.
The UFC Vegas 6 official weigh-ins will take place at 12 p.m. ET.
Check out UFC Vegas 6 weigh-ins below.
Main card (ESPN+ at 9 p.m. ET)
Derrick Lewis vs. Aleksei Oleinik
Chris Weidman vs. Omari Akhmedov
Darren Stewart vs. Maki Pitolo
Yana Kunitskaya vs. Julija Stoliarenko
Beneil Dariush vs. Scott Holtzman
Prelims (ESPN+ at 6 p.m. ET)
Tim Means vs. Laureano Staropoli
Kevin Holland vs. Joaquin Buckley
Nasrat Haqparast vs. Alex Munoz
Andrew Sanchez vs. Wellington Turman
Gavin Tucker vs. Justin Jaynes
Youssef Zalal vs. Peter Barrett
Irwin Rivera vs. Ali Al Qaisi
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