Boxing superstar Manny Pacquiao, who signed a "promotional contract" with Japan's RIZIN Fighting Federation earlier this month, made an in-ring appearance during Sunday's event at Yokohama Arena.

The 40-year-old Filipino grabbed a microphone and addressed a crowd of 12,914 before the day's final two matches, which included a kickboxing bout between Japanese star Tenshin Nasukawa and Pacquiao's compatriot Fritz Biagtan.

"Good evening, everyone," Pacquiao told fans. "I'm so happy to be here, invited by my friend (RIZIN president Nobuyuki) Sakakibara. Thanks for inviting and supporting our fighter from the Philippines, Fritz Biagtan. I'm so thankful to my friend Sakakibara for inviting me here in the RIZIN promotion. (There have been) very good fights tonight and I hope you enjoy the matches.