5 best moments from Invicta FC 33
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On Dec. 15, Invicta Fighting Championships returned to our lives with an action-packed fight card featuring a handful of the top female athletes in MMA. Atop the Invicta FC 33 card was an atomweight title fight -- the long-awaited rematch between Jihn Yu Frey and Minna Grusander. Here's a look at the top five best moments from the event:

1. Kay Hansen's come-from-behind submission victory
Let's be honest: No one thought Kay Hansen had any chance against Sharon Jacobson. With Hansen taking the fight on just nine days' notice, it wasn't likely she was going to beat an Olympic-caliber wrestler. And for the first two rounds of the fight, it played out as everyone expected. After getting shut out for 14 minutes, Kay Hansen appeared headed toward the wrong side of a judges' decision. But with just seconds remaining in the third and final round, the 19-year-old secured an armbar that nearly broke the internet.

2. Grusander and Frey go the distance
The first fight between Grusander and Frey was so hotly-contested that Shannon Knapp had no choice but to set up an immediate rematch. Unfortunately for the promotion, the second meeting between the ladies was just as close. After five rounds of battle at Invicta FC 33, either lady could have earned the nod on the judges' scorecards. It was Frey who would walk away with her hand raised, but the decision had fans wondering if the ladies need to meet for a third time. Trilogy fight, anyone?

3. Taylor and Zappitella jump into title contention
UFC vet Danielle Taylor coasted to a decision victory over Monserrat Ruiz, and the win put her into prime position for a strawweight championship opportunity in 2019. The same can be said for Alesha Zappitella, who jumped into the atomweight title mix with a win over former title challenger Amber Brown.

4. Megan Anderson faces off with Zappitella
What happens when one of the tallest, strongest female athletes in the UFC faces off with a tiny atomweight? Hilarity ensues. Aussie featherweight Megan Anderson set the web ablaze with her intense staredown opposite the 105-pound talent. Fans can see the photo right here. As you can see, it's absolutely hilarious.

5. Natasha Kingsbury announces retirement
Natasha Kingsbury, one of Invicta FC's original ring card cards, has decided to step away from the sport. She announced her retirement from MMA just a week prior to Invicta FC 33, as she's planning to spend more time with her family and possibly have a second child. Elias Theodoreou, Jade Bryce and Jess Mao are expected to handle the bulk of the promotion's ring card duties moving forward.