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David Tulis, Associated Press
Atlanta Braves' Martin Prado (14) greets teammate Dan Uggla as he scores in front of Washington Nationals pitcher Stephen Strasburg in the third inning of their baseball game on Saturday, June 30, 2012, at Turner Field in Atlanta.

ATLANTA — Washington Nationals ace Stephen Strasburg said he's feeling much better one day after lasting just three innings in the record-setting Atlanta heat.

Thanks to a good night's sleep at the team hotel, Strasburg looked rested and relaxed in the clubhouse on Sunday morning.

"Yeah, as soon as I got back, I just hit the mattress and passed out," he said with a smile.

Strasburg had little reason to smile Saturday, when the National Weather Service reported that the city of Atlanta was broiling at an all-time high of 106 degrees.

Strasburg couldn't return to pitch the fourth inning against the Braves, and Washington manager Davey Johnson noted he was pale, dizzy and barely responding to questions from pitching coach Steve McCatty.

Johnson later was told that severe dehydration led to three intravenous fluid treaments for his young right-hander.

Strasburg spoke before Sunday's game with Nationals starter Gio Gonalez and warned his teammate to be careful with the conditions. The game-time temperature was 101.

"Obviously you want to try and hydrate as much as you can," Strasburg said. "Hopefully it's not as hot as it was yesterday, but it's something that you're just going to have to try and deal with. At the same time, you have to be smart and listen to your body and if it doesn't feel right, you have to take every precaution."

Saturday marked just the second time in Strasburg's 33 starts that the he lost consecutive outings. The three-inning performance also tied for the shortest of his career.

Strasburg, who began the day leading the majors with 122 strikeouts, will try to win his 10th game Friday at home against Colorado.