Actually, if it were crystal clear, it would be on both hands. It's not, which makes me question whether or not it's blood.
It's only on the right because he is right handed, and that is what he lands his power shots with. It's not like he is a fighter that jabs much, so it makes sense for it not to be on his left.
Regarding his shoulder, that's not dye either. That's his black skin being shown through a sweaty t-shirt. You need glasses.
Look at how straight the line of colouring is on the middle knuckle. It isn't blood seepage. If it was, wouldn't he be concerned with getting the wraps off, not folding his towels?
I could've sworn I saw both of his wrapped hands in gloves throwing punches. What your saying is illogical. No reason it wouldn't be on both hand wraps if the gloves really did bleed red dye. Him being right handed has **** to do with it because he was throwing punches with both hands.
Power punches. The dye hasn't just bled, it has been forced onto the gloves with the force of the impact. As I, and the poster above said, look at how clear the line is inbetween each knuckle. Thats not blood, any liquid on or under the gauze would spread and be soaked up. Go to the kitchen and put a couple drops of water on some tissue, it spreads. Look at my post at the top of the page.
You don't need to be. If it was blood it was spread, not keep to straight lines. A pressing however would go against the most raised areas, his bones, i.e. in straight lines.
if Mayweather was bleeding enough for it to soak through the hand wraps I would imagine he would be a bit more panicked than he is there.