In the co-main event, flyweights Aleksi "The Giant" Toivonen and Reece "Lightning" McLaren go toe-to-toe as they make a play for instant contendership status for the ONE Flyweight World Championship.

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McLaren is one of the division's veterans. After a three-bout win streak, he came up short in the ONE Flyweight World Grand Prix but returned with a first-round submission against Gurdarshan Mangat at ONE: Mark of Greatness.

On the opposite side will be Toivonen, who is undefeated, and made an immediate impact in his ONE debut with a first-round submission. The Finnish grappler showcased his developing striking before sinking in the rear-naked choke against Akihiro Fujisawa.

A victory over McLaren will give Toivonen a strong claim to jump the line in the flyweight division, but the Aussie is not an easy out for anybody. Fans can expect a high-paced bout as each man looks to impose their will on the other.

Aleksi Toivonen vs. Reece McLaren | All Wins In ONE Championshipwww.youtube.com

Adriano Moraes and Demetrious Johnson stand atop the division, but a fresh contender will be needed in the near future. That is what is at stake at ONE: Reign of Dynasties. Who will be able to stand out in the spotlight and make a run toward the gold?

Get set for this exciting co-main event by reliving both participants' victories in the October 9 co-main event. ONE: Reign of Dynasties can be seen on the B/R Live app for free at 8:30 a.m. ET/5:30 a.m. PT.