Frank
Costabile

Uncommitted. Currently ranked No. 14 in the state. Compact, 5-foot-9, 165-pound frame, round shoulders with strength throughout. Came out of the ‘pen and displayed premium arm talent. Easy mover with little perceived effort, clean operation, gets into his legs and works in-line, creates quality hip/shoulder separation. Creates above-average arm-speed that plays into a ¾ slot. Fastball cruised at 89-90 mph, working to both the bottom and top of the zone, holds plane with carry. Gained confidence in his slider that played at 81-83 mph, throws with intent, able to land for strikes and to put hitters away to his glove-side, played with sharp 10/4 action and late depth. Strong right-handed hitter, shot a double that nearly left the yard to the opposite field gap, strong/quick hands that gets extension and stays through the ball. High-level two-way prospect to know in the state.

Another explosive performance on Saturday came from fellow sophomore OF/RHP Frank Costabile (Stevenson, 2026), who’s tools and sheer power production rival that of anyone in the state. Athletically, Costabile is a 6.80 runner that gets off the line quickly (1.63 10-yard) with the ability to produce high-end burst in a quick window (34.2” vert, 2.92 RSI score). He flashed bat strength at the plate, barreling his firmest ball up at 97.1 mph while swatting his furthest to straight away center field at an estimated 351 feet, per TrackMan. Costabile’s loudest tool, however, is his arm, and it showed quickly from the outfield - he reached 98 mph from the outfield on Saturday, which is the highest mark we’ve seen across our winter circuit. To take it one step further, Costabile is one of two 2026 graduates in our entire Prep Baseball system, nationwide, to have a max throwing velocity at 98 mph or higher. After that, the 5-foot-9, 165-pound sophomore jumped on the mound and worked in the strike zone with his fastball at 90-91 mph, touching 91.8 mph at peak. His slider has wipeout potential; it played at 79-82 mph in this ‘pen and reached 16.9 inches of horizontal movement at max, while also being able to land it around the zone consistently. He killed spin on his changeup and threw it from a similar arm angle on average to his fastball at 80-82 mph.

OF/RHP Frank Costabile (Stevenson, 2026) put up some eye-opening numbers across the board over the weekend. From the outfield, Costabile displayed plus arm-strength with his best bullet coming in at 98 mph from a crow hop, pairing with athletic actions and steady hands. The right-handed hitter displayed a compact stroke with a level path, creating backspin up the middle with a max EV of 91.7 mph and max distance of 351’. He’s a premium athlete, recording a 6.79 in the 60 with a 34.2” max vertical. Equally impressive on the mound, Costabile creates easy velocity, sitting 90-91 mph, topping out at 91.8 mph. His slider sits 79-82 mph with well above-average spin (avg. 2700 rpm), creating sharp, 11/5 shape. He throws his changeup with intent, and it has fade and sinking action, sitting 80-82 mph. A high-follow in the 2026 class.

Positional Profile: OF/RHP
Body: 5-9, 165-pounds. Compact build with strength.
Hit: RHH. Wide base, gets foot down early with a short stride. Compact swing, level path, backspin up the middle, easy effort. 72.4 mph bat speed with 16 G’s of rotational acceleration.
Power: 97 max exit velocity, averaged 87.9 mph. 351’ max distance.
Arm: RH. OF - 98 mph. Medium arm circle, 3/4 release, explosive out front.
Defense: Two hand approach, stays low and athletic, explosive arm.
Run: 6.80 runner in the 60.

RHP/OF Frank Costabile (Stevenson, 2026) two-way: On the mound Costabile showed off a big arm out of a small frame (5-foot-7, 150-pounds). He works with a drop and drive style that works slightly uphill and to the top of the zone with an 86-88 mph fastball. He flashed plus potential on his breaking ball with some serious spin, but will have to harness its command to see its true effectiveness.

Positional Profile: OF/RHP
Body: 5-7, 150-pounds. Well-proportioned frame with strength.
Hit: RHH. Tall, open setup, short leg kick trigger. Advanced bat/hand speed; short path to the zone. Works off a level plane; particularly strong for his age.
Power: 93 max exit velocity, averaged 85.3 mph. 344’ max distance.
Arm: RH. OF - 93 mph. Loose arm action, high 3/4 slot. Easy arm action. Life and carry on throws.
Defense: Two-hand gather out front, plays through the ball with intent.
Run: 7.02 runner in the 60.

Positional Profile: RHP
Body: 5-7, 150-pounds. Well-proportioned frame with strength.
Delivery: Drop and drive delivery, works slightly uphill. Big arm out of small frame, Flashed near-plus breaking balls but inconsistent action and feel.
Arm Action: RH. Long arm action with scap load, high 3/4 slot.
FB: T88, 86-88 mph. Flashed ride through the zone. T2023, 1953 average rpm.
CB: 69-72 mph. Separates from the slider, 11/5 shape. Flashed above average. T2522, 2425 average rpm.
SL: 78-80 mph. Lateral action, T2273, 2160 average rpm.
CH: 73-76 mph. Fade action from lower slot, gets sink at times. T1264, 1160 average rpm.

Positional Profile: OF
Body: 5-7, 150-pounds.
Hit: RHH. Tall start with some knee bend, slightly open base, hands load back in rhythm, short stride.  Loose hands with bat speed, rotates well out of load, uphill bat path, flashed gap-to-gap feel with juice off the barrel.
Power: 88 max exit velocity, averaged 76.8 mph. 317’ max distance.
Arm: RH. C - 78 mph. OF - 87 mph. Strong arm, short arm circle into a high 3/4 slot.
Defense: 2.13-2.20 pop times. OF: Steady hands, plays through the ball. C: Clean transfer, momentum going towards second on throws, gains ground, deadens the ball out front on blocks.
Run: 7.23 runner in the 60. 

Positional Profile: RHP
Delivery: Controlled leg-lift into balance point, powerful drop/drive lower-half, remains in-line with the plate.
Arm Action: RH. Long arm swing, loose throughout, high 3/4 slot.
FB: T86.8, 84.5-86.3 mph. Rides through the zone. T2117, 1995 average rpm.
CB: 70.8-71.9 mph. Slurvy action, 11/5 plane.  T2319, 2248 average rpm.
SL: 74.5-76.0 mph. Sharp 10/4 shape. T2430, 2055 average rpm.
CH: 77.4-79.1 mph. Hard fading action. T1400, 1350 average rpm.

OF/C/RHP Frank Costabile (Stevenson, 2026) showed off impressive arm strength for a 2026 graduate. The 5-foot-7, 150-pound two-way prospect ran a 7.23 60-yard dash, topped at 87 mph from the outfield and showed above-average bat speed and power from the right-side of the plate. To top off his impressive day, Costabile got on the mound and sat comfortably at 85-86 mph, touching an 86.8 high – that’s good for the third highest fastball velo across all Rising Stars events in the nation this year. Costabile was impressive across all facets, but his on-mound work was particularly eye-opening. He was reaching that mid-80s velocity with relative ease, and he was generating hard sweeping action with his curveball that was spinning at an advanced rate, and not just for a player his age. His changeup was equally impressive, with late arm-side run and fade that he was spotting effectively at the bottom of the zone. Costabile’s arm strength translated effortlessly into his catcher defense, where he recorded pop times in the 2.13-2.20 range, aided by an arm that topped 78 mph out of the chute.