Kolek actually signed for $821,000 under the slot value for the pick, so the Marlins have extra draft pool money to use elsewhere, but Callis notes that it’s still third-highest bonus ever for a high school pitcher. Brady Aiken, who was selected No. 1 overall by the Astros this year, and Pirates prospect Pirates prospect Jameson Taillon each received $6.5 million.
Checking in at a sturdy 6-foot-5 and 250 pounds, Kolek is an 18-year-old right-hander out of Texas who is best known for his 100 mph fastball. Not surprisingly, he still has some work to do with his command and secondary pitches, but the upside is immense.