BARCELONA, Spain (AP) - Matt Grevers scratched his head, wondering what went wrong.
Nathan Adrian and Ryan Lochte stared at the scoreboard, their jaws wide open in disbelief. Kevin Cordes stood on the deck with his hands on his head.
U.S. men's head coach Bob Bowman says "that's like a punch in the gut right there."
Moments earlier, all four swimmers were embracing each other, again celebrating that surest of gold medals in the pool - the men's 4x100 medley relay.
It's a race the U.S. has never lost, except for disqualification. And it was a DQ that prevented the Americans from winning again.
After Adrian touched first in the anchor leg, it was announced that Cordes dove too soon for the breaststroke leg.
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