Key Punches in Mayweather-Guerrero?

Floyd's classic, go-to overhand lead right followed by a dip and pivot to avoid the counter happened a lot, but it looked to me that it was landing kind of sporadically until he uncharacteristically threw that same right wide a few times and had Guerrero looking the other way. Started sweeping it around round 4 and then started to take advantage of it like round 7? After that, PBF just started to light him up with combos pretty much at will. Pretty much what I expected except it took Floyd a little longer to break Robert down because Guerrero was in supreme shape and never gave up. Big brass nuts has the Ghost.

So I guess I would call Floyd's sweeping right (lead or in combination) was key because it was an adjustment made that helped him to be able to fight in the center and land his damaging straight right more often.