A runner establishes her/his own basepath.
A..If F2 has the ball, and B/R loops around to avoid tag, she's out. If she takes off before F2 has possession, from that point to 1B is her path.
B..From the point when she heads to 1B.
C..F2 is dumb if she chases B/R, instead of throwing to 1B.
Bob
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