According to Baltimore roving catching instructor Don Werner …
He told me he and his dad would always watch the Braves play and watch the three big pitchers —Greg Maddux, John Smoltz and Tom Glavine … He and his dad would go over a game: ‘What would you call here? What would you call there?’ The interesting thing is you had a right-handed control pitcher in Maddux, a left-handed control pitcher in Glavine and a power pitcher in Smoltz, so three different approaches to the same hitter, and they’d discuss the game that way.