Martin Truex Jr. was taken to a hospital emergency room after Saturday's final practice for treatment of a kidney stone.
SceneDaily.com reported Truex was released from the hospital Saturday night. A team spokesman told the Web site Truex is expected to compete in Sunday's race at Atlanta Motor Speedway. Truex is scheduled to start from the 23rd position.
"He was complaining of discomfort and pain during practice," NASCAR spokesman Kerry Tharp said. "They had him checked out and that's what it is. They're trying to pass the stone."
Information from The Associated Press was used in this report.