This has been gone over before and the consensus is that if he does not advance to the awarded base he has abandon it and will be called out. This occurred in a walk-off home run with two outs that was nullified because of this and they had to go into extra innings. I can not remember if it was FED or OBR rules that was used.
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Charles Johnson Jr
NFHS Class #1 softball/baseball
ASA/USSSA
Dayton, Ohio
I have been umpiring so long that it was called Rounders when I started.