Strat-O-Matic Baseball 365

Does anyone know how passed balls are determined? I have Javy Lopez on my team with a PB rating 0. He's played in 58 games and already has 4 passed balls. I just assumed since his rating was 0 he wouldn't get any PB's, but that apparently is wrong.

https://365.strat-o-matic.com/team/fielding/1525962

Thanks

You can't get a passed ball from super advanced rules below (only copied the rule in question), but you can still get a passed ball off Catchers X charts.

Since 4 rated catchers get more PB off X-chart--that is taken into account when rating them for super advanced rules.

(29.0) Individual balks, wild pitches, passed balls

At the top of the Advanced side of their cards, each pitcher is rated individually for his balk (bk) and wild pitch (wp) frequency. And each catcher is rated for his passed ball (pb) frequency. Each is on a scale of 0-20, with 0 being the best, resulting in the fewest of these plays.

To use these ratings, follow these rules whenever there is at least one runner on base:
(29.1) When pitching to batters

C. If the 20-sided roll is 2, a balk or passed ball may occur. Roll the white 6-sided die first. If it comes up 1, 2, or 3, a balk may occur. If it comes up 4, 5, or 6, a passed ball may occur. In either case, roll the 20-sided die again and refer to the appropriate rating (the pitcher's balk rating or the catcher's passed ball rating). If the number rolled is less than or equal to the rating, then a balk or passed ball occurs and all baserunners advance one base.