A fastball with rise has a high percentage of backspin. When thrown up in the zone, it is more likely to generate a higher fly ball percentage. Rise+ of 100 is MLB average
Slider
Hammer+
A hammer breaking ball drops vertically with velocity through the zone, or 12-to-6 movement. Hammer+ of 100 is MLB average.
Slider
Sweep+
A sweeping breaking ball moves horizontally with velocity through the zone. Sweep+ of 100 is MLB average.
Damian Kosempa, MARQUETTE UNIVERSITY HIGH SCHOOL (WI), 2026 Positional Profile: RHP Body: 6-1, 190-pounds. Delivery: Methodical, high leg lift with coil, tall/fall down the mound, athletic, repeats it. Arm Action: RH. Full arm action, 3/4 slot, quick arm. FB: T85, 83-84 mph. Plays with arm-side run. T2355, 2296 average rpm. SL: 76-77 mph. 11/5 shape, showed confidence to throw for strikes to both sides of plate, can really spin it, out-pitch weapon. T2632, 2530 average rpm.
3/03/24
Damian Kosempa, Marquette University (WI), 2026 Positional Profile: RHP Body: 6-0, 175-pounds. Athletic build with good proportions and room to add to athletic frame. Delivery: Controlled and deliberate leg lift, medium balance point, drop/drive lower-half, works in-line. Arm Action: RH. Long arm out of the glove, 3/4 release. FB: T84, 83-84 mph. Life out of the hand with some late running action. T2188, 2135 average rpm. CB: 71-73 mph. Sharp, downer action, landed for strikes and beneath the zone. T2229, 2158 average rpm. SL: 74-76 mph. Backed up on him at times, flashed sharp 10/4 action with late horizontal break. T2449, 2313 average rpm. CH: 75-77 mph. Thrown with arm-speed, clean out of the hand with fading action, some feel around the bottom of the zone, rounds out 4 pitch mix starting pitcher repertoire. T1758, 1636 average rpm.
3/03/24
Listed at 6-foot, 175-pounds, the right-hander cruised with his fastball in the 82-84 mph range, playing with carry and running action to his arm-side. He showed both a curveball and a slider, with the slider appearing to be his stronger offering with over 2,400 rpm at times, playing with sharp lateral break at 73-75 mph. He also displayed a changeup at 75-77 mph, running over 16” at times.
6/29/23
Kosempa gave an intriguing look on the mound on Thursday. Standing at a strong 6-foot, 175-pound frame, Kosempa presented above-average arm talent during his start. The fastball sat 79-82 T83 mph. Also showed a curveball in the low-70s that had sharp movement and flashed swing-and-miss potential. Kosempa is a raw mover on the mound that will be interesting to watch as he grows into his body. Final line: CG, 1ER, 1H, 9Ks.
6/18/23
Started at shortstop on Sunday, tallying a hard-hit double in two at-bats on the day. Has a strong swing that produces easy power. On the mound, he pitched 1.2 innings in relief with two strikeouts as well. Fastball topped at 81 mph, sitting 77-80 mph and flashed a hard breaking ball up to 75 mph. Has a quick arm on the mound with simple mechanics. Strong body with a thick lower half.
6/15/23
Kosempa dominated on the bump this afternoon. The RHP induced swing and miss all game with his two-pitch mix. The sidesaddle delivery is calm and works tall and fall. The arm works quick and out of a ¾ slot. Fastball sat 77-81 mph with ride through the zone. The breaking ball was sharp with slurve action, sitting 71-74 mph. Also flashed a change at 74 mph. Final line: CG, SHO, 5 IP, 3 H, 8 K.
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Positional Profile: RHP
Body: 6-1, 190-pounds.
Delivery: Methodical, high leg lift with coil, tall/fall down the mound, athletic, repeats it.
Arm Action: RH. Full arm action, 3/4 slot, quick arm.
FB: T85, 83-84 mph. Plays with arm-side run. T2355, 2296 average rpm.
SL: 76-77 mph. 11/5 shape, showed confidence to throw for strikes to both sides of plate, can really spin it, out-pitch weapon. T2632, 2530 average rpm.
Positional Profile: RHP
Body: 6-0, 175-pounds. Athletic build with good proportions and room to add to athletic frame.
Delivery: Controlled and deliberate leg lift, medium balance point, drop/drive lower-half, works in-line.
Arm Action: RH. Long arm out of the glove, 3/4 release.
FB: T84, 83-84 mph. Life out of the hand with some late running action. T2188, 2135 average rpm.
CB: 71-73 mph. Sharp, downer action, landed for strikes and beneath the zone. T2229, 2158 average rpm.
SL: 74-76 mph. Backed up on him at times, flashed sharp 10/4 action with late horizontal break. T2449, 2313 average rpm.
CH: 75-77 mph. Thrown with arm-speed, clean out of the hand with fading action, some feel around the bottom of the zone, rounds out 4 pitch mix starting pitcher repertoire. T1758, 1636 average rpm.
Kosempa gave an intriguing look on the mound on Thursday. Standing at a strong 6-foot, 175-pound frame, Kosempa presented above-average arm talent during his start. The fastball sat 79-82 T83 mph. Also showed a curveball in the low-70s that had sharp movement and flashed swing-and-miss potential. Kosempa is a raw mover on the mound that will be interesting to watch as he grows into his body. Final line: CG, 1ER, 1H, 9Ks.
Started at shortstop on Sunday, tallying a hard-hit double in two at-bats on the day. Has a strong swing that produces easy power. On the mound, he pitched 1.2 innings in relief with two strikeouts as well. Fastball topped at 81 mph, sitting 77-80 mph and flashed a hard breaking ball up to 75 mph. Has a quick arm on the mound with simple mechanics. Strong body with a thick lower half.
Kosempa dominated on the bump this afternoon. The RHP induced swing and miss all game with his two-pitch mix. The sidesaddle delivery is calm and works tall and fall. The arm works quick and out of a ¾ slot. Fastball sat 77-81 mph with ride through the zone. The breaking ball was sharp with slurve action, sitting 71-74 mph. Also flashed a change at 74 mph. Final line: CG, SHO, 5 IP, 3 H, 8 K.