But as Mayweather and I stand there, watching the Rockets shoot 3s with impunity, the facts of the moment are these: He has just stopped two sparring partners, forcing one to turn his back and take a knee. (Mayweather grabbed him from behind and pulled him to his feet, as if having a man on his knee in his ring were an affront, and immediately called for the next boxer.) He has hit the heavy bag for 15 minutes, the speed bag for 10. He has worked the mitts with his uncle Roger, the nonstop slap of leather on leather like piano notes, and done body work with assistant trainer Nate Jones, a hydrant-shaped man who wore a body protector and still struggled to keep his balance under the weight of the blows. He has taken two 5-pound dumbbells and stood in front of a floor-to-ceiling mirror and rhythmically punched the sky for two sets of three minutes each. He has thrown roughly 8,000 punches in two hours. He then retired to his locker room, where he held court for a few minutes and changed into tights, a sweatshirt and a ski cap to combat the elements of the 83-degree night. He finished off the ensemble by adding a pair of colorful boxers and then ran 5.44 miles in under 37 minutes. "Trains like he's broke," says former world champion and current sparring partner Zab Judah. As I watch over the next three weeks, there will be days when he does not look as sharp, when the reality of his 38 years will infringe on any suggestion of invincibility. But on this day there is only one answer I can give: Yes, he is boxing very well.