Tyson Gay won his opening heat of the 200 at the U.S. track championships in 20.14 seconds.
Charlie Neibergall/AP

Tyson Gay tossed and turned all night, replaying his electric win in the 100 meters.

Now, it's completely out of his mind and he's ready to start all over again.

Gay showed no signs of fatigue as he comfortably advanced out of his opening heat of the 200 on Saturday at the U.S. track championships. He was in control the whole way as he won his heat in 20.14 seconds, the third-fastest overall time on a hot afternoon.

His surgically repaired hip was feeling good, too. Sure, it was a little sore after holding off Justin Gatlin for the 100 title the night before, but not enough to keep him out of the 200 competition.

"I'm healthy, that's the key," Gay said. "I'm not trying to be Superman, if my body is really fatigued. ... When you're injury-free, it makes a world of difference."

Gatlin skipped the 200 because of a tweaked right hamstring, an injury he hid throughout the 100 rounds. Gatlin said in a text that running "9.8 on a bum (hamstring) twice is my limit of luck."

Isiah Young had the fastest time in the first round of the 200, finishing in 20.09. Wallace Spearmon, one of the 200 favorites, also advanced.

In the opening round of the women's race, Olympic champion Allyson Felix definitely was hard to miss in her bright pink calf sleeves. She stood out for her performance, too, taking almost a leisurely stroll as she finished in 22.44.

"It was good," said Felix, who sat out of the 100 to concentrate on her signature event, the 200. "Just wanted to get out there, control the race."

Felix's training partner Jeneba Tarmoh had the fastest time - 22.23 - and that's after all the rounds of the 100, too.

"I definitely feel sore. But it's a mind over matter situation," said Tarmoh, who finished fourth in the 100. "A lot of times your body feels weak and tired before your mind does. I'm telling myself, `Jeneba, you can do this. Keep on pressing."'

Michelle Carter set an American record in the shot put with a throw of 66 feet, 5 inches on her way to the title.

David Oliver had the top time in the opening round of the 110-meter hurdles, while Olympic champion Aries Merritt ran a smooth race to advance. Merritt hasn't competed all that much this season due to a nagging right hamstring injury.

Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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