Broad shoulders, tapered waist, thick lower half, room for added strength; high three-quarter arm slot, plus arm speed, hides the ball well against righties, left-handed hitters get a better look; drives over a closed front side, repeatable mechanics; up-tempo worker, good mound demeanor
Mauricio Rubio Jr.
Quad Cities River Bandits (Low A, Astros)
60: No. 3 Starter
Plane, mild run; worked it east-to-west, elevated in two-strike counts as the situation dictated; flashes of plus command, can lose his release point and miss down with the offering; will establish the fastball for strikes at the highest level, offering will also generate ground ball outs
11-5 shape, inconsistent depth, occasionally flashed plus; feel for the offering inconsistent early, gained feel and stayed on top of the offering as the game went on; has a good feel for spin, adds and subtracts with intent; showed bat-missing potential at the highest level
Manipulated the pitch well, can sink it and run it to the arm side; plus feel for the offering, deceptive, swing-and-miss pitch to lefties and righties alike, weak right-on-right contact; plus command, pitch will play as a true bat-misser at the highest level
FB Command: 60/60
Secondaries Command: 50/60
Profiles as a rotation anchor with plus command, three plus-or-better offerings, and the ability to add to his repertoire. Perez has an advanced feel for pitching that is rare for someone his age, as evidenced by his ability to mix in changeups for first-pitch strikes and his willingness to change speeds and eye levels. Perez attacks the strike zone with all three of his offerings. Once he finds consistency with his breaking ball it will be a weapon against right-handed hitters. He profiles as a rotation stalwart who can overshoot his projection if the command develops in full.