Megan Anderson scored a TKO victory over Cat Zingano and Ryan Hall became the first MMA fighter to submit BJ Penn in early action at UFC 232 Saturday night.

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Anderson earned her finish after delivering a head-kick to Zingano that missed. However, her toe struck the former title contender in the eye and forced her to turn away from the action.

The referee immediately stepped in and the bout was called in favor of the former Invicta FC champion.

Hall kicked off the final FOX Sports 1 prelims with a first round submission of Penn, locking in a heel hook.

Check out early results from UFC 232 below:

MAIN CARD (PPV/10 p.m. ET)

Vacant UFC Light Heavyweight Championship
Jon Jones vs. Alexander Gustafsson

UFC Female Featherweight Championship
Cris Cyborg (c) vs. Amanda Nunes

Welterweight: Michael Chiesa vs. Carlos Condit

Light Heavyweight: Ilir Latifi vs. Corey Anderson

Featherweight: Chad Mendes vs. Alexander Volkanovski

Walt Harris def. Andrei Arlovski via split decision (27-30, 29-28, 29-28)

Megan Anderson def. Cat Zingano via TKO (eye injury) at 1:01 of Round 1

Petr Yan def. Douglas Silva de Andrade via TKO (corner stoppage) at 5:00 of Round 2

Ryan Hall def. BJ Penn via submission (heel hook) at 2:46 of Round 1

Nathaniel Wood def. Andre Ewell via submission (rear-naked choke) at 4:12 of Round 3

Uriah Hall def. Bevon Lewis via KO (strike) at 1:32 of Round 3

Curtis Millender def. Siyar Bahadurzada via unanimous decision (29-28, 29-28, 30-27)

Montel Jackson def. Brian Kelleher via submission (D’arce choke) at 1:40 of Round 1