Another new mechanic?

[Dakota]

Originally Posted by CecilOne

Isn't the usual rookie position U3?

What I've seen is rookies put at U1 with the explanation that much will be familiar wrt starting positions, making the most common BU call (at 1B) etc.

Although, in my first ever 3 umpire game I was at U3. I think, though, that was because my partners wanted to make me run!