[John P. Yuda]

Originally Posted by Big Six

I remember asking my dad why baseball managers wore uniforms like players, while no other sport's coaches do. I was probably about six or seven years old at the time. My dad was a high school baseball coach, and wore a uniform like the players. He told me that it was that way because so many managers were player-managers at one time, and since he was my dad, I never thought about the idea again.

There's also the fact that -- unlike other sports -- baseball coaches are regularly out on the field, between base coaching and pitching changes/visits.