I have C on this.
I believe they clarify U1 position so umpires don't get confused thinking possibly in 2-man, it might hit you while you're inside (making it interference), despite there being no runners on.
from a post above-wonder who the new crew chief will be and the fill in moving up?
not a change but ready to go article
https://www.news-journalonline.com/story/sports/mlb/2026/01/13/mlb-umpire-hunter-wendelstedt-injury-spring-training/88140624007/
@MadMax Just wondering when you will be able to ship the 4 pairs of shoes to me? I'll be starting to outfit the new guys with gear in a couple of weeks. Thanks... ump7tony
Bruns cleared this up in one of his "Responses to Submitted Rules Questions" memos his put out on February 28th last year. The memo was 7 pages, but here is the relevant section: