Key takeaways
Roberto Satoshi De Souza beat Luiz Gustavo by knockout after 21 seconds in the main event of RIZIN 48 at the Saitama Super Arena in Saitama. In the co-main event, Naoki Inoue beat Soo Chul Kim by knockout at 4:01 of round one at bantamweight.
Across the eleven bouts that produced a result, five ended by knockout, three by submission and three on the judges' scorecards — eight stoppages in eleven fights. Every decision was unanimous: not one result divided the judges.
The quickest finish belonged to Roberto Satoshi De Souza, who stopped Luiz Gustavo after 21 seconds, and seven of the eight finishes came inside the opening round. The longest was Yuki Motoya's submission of Shinobu Ota, 14 minutes and 8 seconds in. End to end, the eleven fights filled one hour and 19 minutes of cage time.
The main card finished at the higher rate: six of six, against two of the five below it. Ryo Takagi (submission, round one) and Kyouma Akimoto (knockout, round one) all closed before the judges were needed.
Four weight classes were used, bantamweight most often with three bouts.
