The Jays would know, or at least have a good idea, if any of their pitchers are/were sticky stuff users wouldn't they?
If Dolis was and quit using it maybe it's time to put the guy out to pasture. Same with Chatwood. These guys struggle to throw strikes at the best of times, and now when they actually get it in the zone their pitches are way more hittable.
If this is the case we have to stop trotting them out there and costing us games. Take them away from Charlie, Shatkins, same as you did with Panik.