"Whenever I get up on the block and they say, 'Take your mark,' everything just goes blank, and I'm ready to swim." Need a break? Play the USA TODAY Daily Crossword Puzzle. Kirby added that she ...

"Whenever I get up on the block and they say, 'Take your mark,' everything just goes blank, and I'm ready to swim." Kirby added that she can't hear much of the crowd noise or the words from her ...