This is all I could find. While this is a "black box" strategy,, I can tell you that guarding the lines adds singles and robs doubles (and maybe triples)
When I play CDROM, I notice that most manager use the defaut "guard lines" always late in a game. I only use it with 2 outs, as I'd rather get the batter out (give up a few xtra base hits for more outs)
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