Two umpire system, not NCAA, preferably USA & NFHS.
With runners on 2nd and 3rd and the BU in the C slot.
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1)
AFAIK, the
priority is always the lead runner, 3rd for this.
2)
AFAIK, we are taught to
move parallel to the base line. So,
a) walking the runner back to 3rd means moving
parallel and perpendicular to the foul line; as opposed to 45 degree angle or forward toward the base line.
b) walking the runner back to 2nd, only if runner at 3rd not moving forward, also
parallel to the base line; as opposed to 45 degree angle or forward toward the base line.
Obviously, watching the other runner as well, and not blocking the SS.
Both cases, upright, watching the ball, walking back until the runner reaches the base.
Comments, please.