Carlyle appeared to become injured taking a swing in the bottom of the fifth. He threw several warmup pitches before removing himself from the game.
"It's something I've done in the past," Carlyle said. "It's something a little bit silly -- I took too big of a swing on an off-speed pitch and hyper-extended it. It's not something that I think is going to cause a lot of problems."
Carlyle, who said he has pitched through a similar injury in the past, improved to 6-3 on Wednesday as the Braves beat Houston, 12-3. He has picked up five of his wins at home despite a 4.60 ERA at Turner Field. On the road, Carlyle is 1-1 with a 3.42 ERA.
On Wednesday, Carlyle was staked to a 7-0 lead. He allowed two earned runs and five hits, including a solo home run to Lance Berkman, with two strikeouts and no walks.
"We'll keep our fingers crossed that he makes his next start," Braves manager Bobby Cox said.
Jeff Lutz is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.