Estrada hit a bump. No need for stats to see what's wrong with him, his curve was not located last game and last 2 his changeup has been hung. He needs solid command of fastball and changeup to not get crushed like he did in Milwalkee given his low velocity.
Also he needs a 3rd pitch, the curve, to work or else they'll sit mid-80s and adjust to the changeup. He needs the 3rd pitch in the rotation to keep hitters thinking.
Yesterday he had only 2 pitches working and his change was left up half the time, especially early, not exactly recepie for success