Rare footage of Daigo actually losing...and not so rare footage of Daigo beasting!
A handful of videos popped up recently from the Arcadia Magazine Umehara Kumite among some others from Daigo's random visits to arcades in Japan. Most of the videos he is doing what he does best but Sagat player Mago shows how powerful Sagat can be and another Akuma Player, Momochi takes Daigo to the cleaners in the other matches. You can see the Arcadia matches on lordaborigine's YouTube Channel and the other assorted matches on AHOJagi's channel.
Be sure to check out JOE's C.Viper in the Arcadia matches. A true testament to the fact that every character is a viable choice to play in SFIV. Also, I'd be sure to check all of these out as soon as possible. I would not be surprised to see the Arcadia Matches taken down shortly due to copyright issues.