Justin Thomas, a trusted confidant of Tiger Woods who frequently joins Woods for pretournament practice rounds, appeared stunned by the news of Woods’s accident on Tuesday.

“I’m sick to my stomach,” Thomas said as he prepared for the Workday Championship, a PGA Tour event in Central Florida set to begin Thursday. “It hurts to see one of your closest friends get in an accident.”

Thomas said he had heard about Woods’s crash only minutes earlier.

“Man, I just hope he’s all right,” he said. “I’m just worried for his kids, I’m sure they’re struggling.”

Thomas and his father, Mike, were paired with Woods and his son, Charlie, during the PNC Championship, a father and son tournament in December. Woods also has a daughter, Sam.