To mark the occasion, pitcher Kelvin Herrera made up a placard reading "Ten Years of Service" with the obligatory smiley face and taped it to the front of Chen's shirt.
How long did it take Chen to do it?
"Ohhhhh, I started playing when I was 16," he said.
Chen, 35, signed out of Panama with the Braves in 1993.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.