Ferdy,
Based on my experience on this website, I believe you'll find that Caltech is one of those few places that does very little if any recruiting. Their admissions rate for men is 5% for men and 7% overall. Those folks that go to Caltech aren't going primarily to play baseball. If you were a standout high school baseball player and are one of the select few to be admitted to CalTech (approx 285 men) I really like your chances of making the CalTech baseball team!
Best of luck on the SAT or ACT!