In a champion-vs.-champion fight at the top of the Rizin 16 card, Ayaka Hamasaki topped Jinh Yu Frey for a second time. Hamasaki (18-2), Rizin’s champion at super atomweight (108 pounds), took a unanimous decision from Frey (8-4), who is Invicta FC’s atomweight champ. The bout was the MMA main event at World Memorial Hall in Kobe, Japan. Hamasaki ran her winning streak to four fights, all under the Rizin banner. She first fought Frey in 2016 at Invicta FC 16 and won with a second-round TKO when doctors stopped the fight due to a cut. Frey had her two-fight winning streak snapped with the loss, though her Invicta title wasn’t on the line.