Help identify these bat marks??

[scottanservitz]

I recently picked up a 1991 Travis Fryman gamer off eBay for a great price. The bat is a Tigers and I really wanted an Indians bat, but the price was too good. Anyways, the bat has his number and 3 tally marks on both the knob and the barrel end. Does anyone have a guess as to what the tally marks represent? Here are what I have come up with so far:

1) Number of HR's hit with this bat
2) Numbered bat in rack
3) Number of children he has
4) ?

What does it mean? I have seen other bats with this as well, but maybe somebody has spoken to the players to get better insight. Thanks.
Scott