If I were an opposing scout, just saying, taking notes on Tristan Casas I would go as follows:
1. Always takes first pitch, so pump a center cut at medium speed.
2. Get him to swing and miss chasing a low outside medium FB
3. Put a decent heater on the outer edge of the zone so he will foul it back
4. Work the count to 3-2 , then f*** him with a pitch on the inner edge for called strike 3. He is looking for a walk. No aggression, nor ability to smack heat