Today I found a copy of Ready to Rumble Boxing at a thrift store thinking it was round 2 since I already had the first one loose disc as well. But when I got home it turns out they are both the same game just different colored discs. If someone could explain that would be awesome, thanks!
I can't figure out how to attach the picture I took so I guess I'll just describe it by saying on disc is yellow, and the other is Red but they are both the same game, and neither one says sega all stars.