The NCAA 25 preseason guide stated that "previously, a violation of rule 9-2e resulted in the ejection of the offending player. This spring, upon discovery, the head coach is also ejected." I don't have access to the previous rulebook to see what verbiage was actually changed, but it's extremely confusing as written to imagine a situation where a position player possesses a foreign substance, and the pitcher is the one ejected. Maybe the shortstop just wants something on his hand to keep from airmailing a throw on a wet day, that's the pitcher's fault?
For the sake of argument, rule 1-11c states that a player intentionally damaging or discoloring the ball will be warned and then "removed" from the game (since it's "removed" and not ejected does that get us out of writing a report?). The question in the test is about foreign substance, so I don't think that rule applies here. However, if a pitcher has a nail file like Joe Niekro, per NCAA we just warn, and then only eject the pitcher if it continues, not the coach. I know what the spirit of the rule for foreign substances is, but question how they came up with this penalty.