USA TODAY Sports/MMA Junkie rankings, Oct. 8: Julianna Peña back on top

The latest pay-per-view event for the UFC hosted a pair of title fights, producing a new two-time champion.

In the main event of UFC 307, Alex Pereira successfully defended his light heavyweight title by stopping Khalil Rountree in a Fight of the Night battle. Pereira is already No. 1 in his division and in the P4P rankings, so he has nowhere to move. However, Rountree, even in a loss, moves up a few spots due to his stellar performance, moving from No. 12 to No. 10.

In the co-feature, Julianna Pena emerged victorious in a controversial split decision win over Raquel Pennington to win back the women’s bantamweight title. Peña entered the week at No. 2 and Pennington at No. 1, swapping places after Saturday’s result.

In another women’s bantamweight swap, No. 3 Ketlen Viera lost to No. 4 Kayla Harrison. They swap rankings in this week’s update.

Check out all the latest pound-for-pound and divisional USA TODAY Sports/MMA Junkie rankings.