I should probably explain what I meant by head case, as my usage is on the lesser side of the definition. He is not a Ketel Marte, nor even an Alec Bohm level of head case. His has far more to do with overall confidence, which is more easily shaken than many other stars.
- He expressed some trepidation about being able to live up to his huge deal when he got here, and the pressure that comes with it and playing in Philly. He then had some real trouble adjusting.
- The famous standing ovation, which drew him out of a lengthy and awful slump.
- The consistent ups and downs - both at the plate and in the field. Batting title and elite defense last season / terrible start this year and unexplainable inconsistencies on defense yet again.
- Bigger personalities such as Bryce and Kyle revel in the challenges - Trea is far more under the radar, and seems to let failures carry forward more than a star athlete should.
The talent and the athleticism has not changed in a measurable way, overall. Last year he was an elite fielding SS (after significant work to correct his fundamentals over time). This year he is back to lesser fundamentals, along with focus issues.
Defense is all about confidence - you drill the fundamentals in so that you can just react on the field. If you are fully confident out there, then you want the ball hit to you. The talent just flows; too often he is overthinking and not fully confident in his own abilities and the flow is lost.
Trea is a good guy - he is on the quieter side and does not seem to seek attention in the same way as a number of other stars. Teammates seem to like him; he is supportive and he shows up every day. He just seems to be a bit more fragile in the confidence department than he should be, and it does appear to impact his results. So that kind of head case...