Oops.

Panama's Alonso Edward false-started in his 200-meter qualifying heat Tuesday morning, taking four or five full strides before realizing the gun hadn't gone off.

The Olympic Stadium announcer drew chuckles from the crowd by making this observation over the loudspeakers: "And that could be problematic."

Seconds later, an official wandered over to Edward and showed him a red-and-black card signifying that the sprinter had been disqualified.

Problematic yet heart-breaking.

— Howard Fendrich — Twitter http://twitter.com/HowardFendrich

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EDITOR'S NOTE — "Eyes on London" shows you the Olympics through the eyes of Associated Press journalists across the 2012 Olympic city and around the world. Follow them on Twitter where available with the handles listed after each item.