He pretty much said himself that he hasn't had consistent command of his cutter this season, and that he works off of that pitch a lot, iirc. Yes but he's also recently said that he's found the command again and is comfortable using the pitch again. In his last start he threw it 29 times, the most since April. Not sure how many times today but either way it doesn't seem to be translating to any sort of added success. I'm pretty sure he said that during the SF series. Plus, there's a difference between throwing it, and consistently commanding it. I mean clearly Jake's issues have stem from losing command at points, mostly within starts. when he was ruling the world last year, he and others attributed his success to repeating his mechanics. I'd bet the inverse is true when he struggles.