By: The Associated Press (AP)
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

All the hard work Tianna Madison has put in over the last eight months is starting to pay off.

The American sprinter ran a blazing 10.97 in the 100 on Friday to advance to the semifinals.

Madison says she's dropped 20 pounds (9 kilos) since September to reshape her body and prepare for the Olympics.

"It's making all the difference for me," Madison says. "I talked with my husband and we decided it's time to step up and get serious about training and that's what we did."

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

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