Looking for thoughts on this play.
Batter-Runner called out for R1 interference on force play. Fed rules.
Umpire was overheard telling the coach that the runner must slide.
(a quick internet search reveals that runners are never required to slide; they "must slide OR avoid contact" is usually whats found --- except for some local park rules that may require slides)
I'm guessing this is dealt with in 8-4-2 -- which states "runners are never required to slide"
https://youtu.be/A7FvFYUZ8kg