And yet, some BU will call that play at 3rd from between the pitcher circle and C slot.
There is no way the BU can get into a good position to make any call at 3rd without the runner being OBS.
What about this with a runner on 2nd tagging up on an outfield fly?
What about it? Apples and oranges. To start, the umpire starts in a different position and it is a batted ball. The BU is responsible for the runner tagging up for a possible catch and advance, and the BR should the ball not be caught
The Umpire Manual for runner on second base only, fly ball to outfield; seems to contradict itself.
For PU - βany play on the lead runner at 3Bβ
For BU - βthe last runner to 3Bβ
No contradiction as the mechanic has to allow for no catch which would create multiple runners. The BU has the lone runner to 3rd on a batted ball.