But earlier this week, before Rivera tore his right anterior cruciate while shagging fly balls, Gonzalez stopped his players from continuing the ritual of throwing a Frisbee around the outfield approximately an hour before the start of batting practice.
"If you watch our BP, watch [Craig] Kimbrel and [Jonny] Venters shag," Gonzalez said. "That's how they get their running in. But that Frisbee, that's out of the question. I solved that a couple days ago. It's not because it's bad. But if something happens, I don't want to answer the questions."
John Smoltz and Greg Maddux are among the many pitchers who have used shagging fly balls during batting practice as a conditioning drill. While there has always been a risk of injury, the practice is more controlled than the Frisbee throwing that included more than 10 players on many afternoons.
"They're having fun and running around," Gonzalez said. "But I don't want [Braves general manager Frank Wren] saying, 'How come Venters blew out a hamstring chasing a Frisbee around?"