The shining star from the Rizin FF women’s super atomweight grand prix opening round was Rena Kubota , who picked up a first-round knockout of Andy Nguyen in the main event of today’s Rizin FF 7 event. Kubota’s (5-0) striking was on point in the tournament bout with Nguyen (5-5), which headlined the FITE TV-streamed card at Marine Messe Fukuoka in Fukuoka, Japan. She put in early body work against her opponent and capped it off with a left hook to the liver for the knockout at the 3:23 mark of Round 1. Nguyen didn’t appear to be overwhelmed by the moment against the highly touted 26-year-old Kubota