Saturday’s ONE: Heart of the Lion event from Singapore will feature two matches pitting four champions against one another.

More from Fightline

Atomweight champion Angela Lee tries to claim the strawweight title when she meets Xiong Jing Nan, while Bibiano Fernandes and Kevin Belingon meet to determine the undisputed bantamweight champion.

Here’s a synopsis from ONE Championship’s official site:

With four ONE World Champions headlining the event, history will be made when the world’s most exciting martial arts action returns to Singapore for ONE: HEART OF THE LION.

For the first time ever, fans around the world will see two World Champion versus World Champion Super-Bouts in a single night. In the main event, ONE Women’s Atomweight World Champion, Singapore’s very own Angela Lee, will step up to challenge China’s Xiong Jing Nan for her ONE Women’s Strawweight World Title.

The co-main event is just as epic. In a highly-anticipated rematch, ONE Bantamweight World Champion Bibiano Fernandes will face ONE Interim Bantamweight World Champion Kevin Belingon in a colossal clash to unify the belts.

These incredible match-ups will be supported by a stacked card featuring the world’s best martial artists and superstar strikers, who will be battling for glory in front of 1.7 billion potential viewers across 138 countries around the globe. With so much at stake, fans are in for an incredible night like no other, so mark your calendars now!