In the marathon FIBA Americas early round format of eight games in nine days, the advantage clearly goes to the deepest teams.

As if the United States needed any more help.

?Obviously, we have depth,? reserve guard Michael Redd said. ?Our team is so deep, so you're not playing a whole lot of minutes. That's what we need to win, depth.?

The Americans have more of it than any team in the field, a big reason they were undefeated as they headed into Tuesday night's second-round game against Puerto Rico.

The U.S. team already has the most talented starting lineup in the 10-team field, but it becomes almost unfair when teams are forced to their bench. While most don't have the luxury of a game changer, U.S. coach Mike Krzyzewski's usual reserves have included an NBA finals MVP (Chauncey Billups), a first-team All-NBA pick (Amare Stoudemire) and his two best shooters (Redd and Mike Miller).

For the Americans, changing personnel doesn't mean changing playing styles. They sometimes have even looked better with the subs in, such as when they blew open their victory against Canada early in the second quarter.

?I don't like to call them our second unit, because each of them has a role,? Krzyzewski said. ?To get them that many minutes, we all stay in shape and we don't get overtired.

?We save our legs, but everyone gets good wind. The way we've been substituting, they're accustomed to not pacing themselves at all. In other words, instead of running a mile, they're running a 100-yard dash.?