Do guys like
Eduardo Castillo really exist in RL? 4-6 stamina will net about, what, 10 pitches, max? What pitcher is gassed after 10 pitches? This has probably been brought up before, but I can't remember when, so I thought I'd throw it out there again.
It's similar to the philosophy that was had about 0 power generating 0 HR no matter how many at bats the player has. If a rating of 0 is the 0th percentile, and 100 the 100th percentile, 0 or 1 stamina should be at least 15 pitches, right? And 100 stamina should be something around Edwin Jackson's no-hit performance (150ish)? Is there really a guy, when healthy, that has dominant stuff but can't go more than 10 pitches? As it stands now, this guy is useless. If he gives up a walk, he's already thrown too many pitches and has to come out.
So my suggestion (since it's a suggestion forum and not a complaining forum) would be to either keep the stamina engine as it is but set a min stamina rating around 15, OR make 1 stamina guys good for 15 pitches, 100 stamina guys good for 150 pitches, and work out the increments from there.