I wish MLB would change this rule. Unless there is an injury, if someone warms up before the inning, they should have to pitch to at least one batter. One, you're saving a manager who wasn't smart enough to get the guy up early enough to be ready. Two, the games take too long already. Now we had 8 warmups from a guy, a mound visit, a pitching change and now 8 more warmup pitches....between innings. Thats probably 5 minutes.