If Gonzalez is to improve it will need to start with his fastball. Hitters are able to generate decent contact by hitting a line drive almost half of all batted balls against it.
Gonzalez’s breaking pitch is decent but has room to improve. If this is going to be his secondary pitch and potentially out pitch, he will need to generate more whiffs. However, he does have decent control and keeps the hits to minimum.
As Gonzalez’s third pitch, his changeup is able to play well off his fastball with significantly more horizontal movement. He did not throw it often but it produced almost exclusively fly balls when hit.