Just an observation:
Player A, 19 Years Old: 25 Starts between A and AA, 12.0 K.9, 4.9 BB.9, 2.95 ERA
Player B, 20 Years Old: 24 Starts between A and AA, 11.6 K.9, 4.8 BB.9, 2.71 ERA
Player A is Clayton Kershaw
Player B is Henry Owens, Red Sox prospect.