Great reflexes don't guarantee protection
Base coaches in the major leagues are "a fraternity," says Rich Donnelly, the third-base coach of the Dodgers. They talk all the time about their jobs, about giving signs, sending runners, etc. And they talk all the time about the danger and the fear of standing 90 feet, sometimes closer, from a hitter that might hit a line drive at them at an inconceivable rate of speed.
You can be quick as a cat, and you'll have no chance. Helmets won't help. It's a helpless feeling down there.
-- Rich Donnelly