With Major League Baseball set to order umpires to enforce the foreign substance rules starting Monday, at least three teams intend enforce those rules.
If the managers of those teams receive information that seems suspicious -- video capturing an opposing pitcher perhaps using foreign substances, or data about an unusual spike in spin rate -- they will ask umpires to check opposing pitchers.
A high-ranking talent evaluator explained his organization's perspective.
"We've been telling our pitchers that if they have been using, they need to stop," the evaluator said. "We are looking to level the playing field. The whole sport is looking to level the playing field. We have an expectation our guys will honor the rule. If we get an indication that there's someone pitching for the other team who might be doing something to gain a competitive advantage, yes, we will want our manager to challenge that."