When it comes to TJ Stuff+, there’s a lot to be encouraged about with Olivarez’s profile. While his overall TJ Stuff+ is 100 and he has only one pitch with a TJ Stuff+ over 100 (his curve, which has a 106 mark), all four of his offerings have pitching grades over 50. That shows that he has a balanced profile, and he does have one elite pitch in his curveball, which has a pitching grade of 64 and a whiff rate of 66.7%.
Olivarez hasn’t generated an outstanding chase rate (28.6%), and his whiff rate has been below average (21.4%). That said, his four-seamer chase has been solid (31.6%), and he’s been limiting hard contact on his fastball, with his four-seamer posting a .362 xwOBACON and his sinker posting a .107 xwOBACON. I believe a reason for the lower chase and whiff rates is due to his erratic control, as he has a 44.4% zone rate so far this spring.
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