Usain Bolt says the two golds he's won in London makes him a legend. So what happens if he adds another?

One night after becoming the first man to win the 100 and 200 in back-to-back Olympics, Bolt will get started toward a quest for a sixth career gold medal in the preliminary round of the 4x100 on Friday.

Bolt won all three events in Beijing, but the Jamaicans could have a tougher time this year. Asafa Powell is injured, meaning Warren Weir will likely take his place. That's not a bad backup. Weir won bronze in the 200 on Thursday.

"Usain Bolt is truly an inspiration to everybody across the world," Weir says. "And I must say, it's well-deserved."

— Jon Krawczynski — Twitter http://twitter.com/APKrawczynski

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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.