PIAA, I've never seen an umpire or official enforce that a specific ball be used. Simple-- it's only required during the state series. BUT, why would a school necessarily choose to use a different ball than what they are required to use in the postseason? Obviously, part of it could be budget not allowing for all new stuff.
This probably is not near as big of a concern with baseball or softball as it is for football or basketball. With baseball, many of them only last 2-3 games if that. In basketball, you could use the same game ball for years. And the basketballs for practice are going to last 2-3 years as well.
Anybody who went out and bought a bunch of new basketballs, volleyballs, s****r balls, or footballs this year in Illinois can not be happy with the new contract.
Oh, and here's a good one-- Baden is going to give each member school a ball for each sport
Gonna do baseball a lot of good