CHICAGO — Craig Sager carried around a picture from his childhood with Billy Williams, and he showed it to the Hall of Fame slugger in the home dugout at Wrigley Field. He introduced his family to Cubs manager Joe Maddon and posed for a group picture with the iconic outfield serving as a backdrop.

This was no ordinary night, even for the beloved TNT broadcaster.

The 64-year-old Sager, who is being treated for a recurrence of leukemia, threw out a ceremonial first pitch before his hometown Cubs faced the Los Angeles Dodgers on Wednesday. Dressed in a white suit with a blue shirt and a red and blue tie, Sager swapped out his jacket for a home Cubs jersey with No. 14 and his name on the back before throwing to first baseman Anthony Rizzo, also a cancer survivor.

“I’ve done World Cup soccer. I’ve done the Olympics, the Super Bowls, the World Series and the NBA Finals, PGA Championships, I’ve done everything,” Sager said. “So when they called and asked if I wanted to throw out the first pitch, I was thinking, not only have I never done it, but I never even thought about it. I never even thought about it being possible. So when they called I said, ‘Heck, yes!’ … It’s a very big thrill for me.”

Sager, who just finished with NBA’s Western Conference finals Monday night in California, got a warm ovation from the latearriving crowd on a beautiful evening in Chicago. He also was scheduled to lead the singing of “Take Me Out to the Ball Game” during the seventh-inning stretch.

“What he’s doing and how he’s doing it, it’s just hard to imagine,” said Maddon, who presented Sager with his jersey before the first pitch, “and we’re with him, man, we’re just with him.”

Sager was first diagnosed with leukemia in 2014 and announced in March that he was no longer in remission. He is scheduled for eight days of chemotherapy in Houston starting on Monday. He undergoes the treatment once every three weeks.

The sixth cycle is scheduled for July, and then he plans to head to Rio de Janeiro to cover basketball at the Olympics for NBC.