Prep Baseball Report

CLASS OF 2025

LHP
OF

Alvin
Rosario III

St. Joseph High School - Trumbull, CT (HS) • CT
6' 0" • 170LBS
R/L • 17yr
Travel Team: CT Mets
2025 National

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2025 State

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Best of Snapshot
Positional Tools Velos / Pop
TrackMan Hitting
Blast
TrackMan Pitching
Swift
News
Comments
Contact

Best Of Stats

Pitching

Fastball

82.1
Velocity (max)
8/12/23
79.8 - 81.6
Velo Range
8/12/23
1961
Spin Rate (avg)
1/16/23

Changeup

71.6 - 71.7
Velo Range
1/16/23
1945
Spin Rate (avg)
1/16/23

Slider

73.9 - 76.8
Velo Range
8/12/23
2302
Spin Rate (avg)
1/16/23
Power
94.7
Exit Velocity (max)
6/18/24
86.2
Exit Velocity (avg)
6/18/24
362
Distance (max)
8/12/23
89
Sweet Spot %
6/18/24
Hitting
26.2
Hand Speed (max)
8/12/23
82.5
Bat Speed (max)
8/12/23
22.8
Rot. Acc (max)
8/12/23
-
Hard Hit %
Run
6.63
60
6/18/24
-
30-yd
1.65
10-yd
8/12/23
19.8
Run speed (max)
8/12/23
Defense
-
INF Velo
84
OF Velo
8/12/23
-
C Velo
-
Pop Time

Positional Tools

2024
2023
60 Yard Dash
6.63
Outfield Velocity
81.0
Power / Speed Score
14.3
Home to First
4.15
Outfield Velocity
84.0

Hitting

2024
2023
Exit Velocity Max
94.7
Exit Velocity Avg
86.2
Distance Max
354
Distance Avg
237
Launch Angle Avg
17.1
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Exit Velocity Max
93.3
Exit Velocity Avg
77.5
Distance Max
362
Distance Avg
206
Launch Angle Avg
23.2
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
2024 New England Top Prospect Games @ Clark University (Invite Only)
Jun 18, 2024
Trackman - Hitting
94.7
Exit Velocity (max)
86.2
Exit Velocity (avg)
237
Distance (avg)
354
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Scout Day: Technique Tigers 8.12.23
Aug 12, 2023
Trackman - Hitting
93.3
Exit Velocity (max)
85.4
Exit Velocity (avg)
280
Distance (avg)
362
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
2023 Connecticut Preseason College ID
Jan 16, 2023
Trackman - Hitting
81.7
Exit Velocity (max)
70.8
Exit Velocity (avg)
142
Distance (avg)
237
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %

Hitting

2024
2023
Hand Speed Max
21.7
Hand Speed Avg
20.3
Bat Speed Max
74.5
Bat Speed Avg
68.7
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Hand Speed Max
26.2
Hand Speed Avg
21.2
Bat Speed Max
82.5
Bat Speed Avg
71.7
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
2024 New England Top Prospect Games @ Clark University (Invite Only)
Jun 18, 2024
Blast - Hitting
21.7
Hand Speed (max)
20.3
Hand Speed (avg)
74.5
Bat Speed (max)
68.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Scout Day: Technique Tigers 8.12.23
Aug 12, 2023
Blast - Hitting
26.2
Hand Speed (max)
24.2
Hand Speed (avg)
82.5
Bat Speed (max)
78.9
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
2023 Connecticut Preseason College ID
Jan 16, 2023
Blast - Hitting
19.3
Hand Speed (max)
18.3
Hand Speed (avg)
68.5
Bat Speed (max)
64.4
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency

Pitching

2024
2023
Fastball
Velocity Max
79.2
Fastball
Velocity Avg
75.7
Fastball
Spin Rate Avg
1786
Fastball
Spin Score Avg
23.6
Fastball
Total Movement Avg
Slider
Velocity Avg
69.7
Slider
Spin Rate Avg
1836
Slider
Total Movement Avg
Fastball
Velocity Max
82.1
Fastball
Velocity Avg
78.5
Fastball
Spin Rate Avg
1910
Fastball
Spin Score Avg
24.4
Fastball
Total Movement Avg
Changeup
Velocity Avg
71.6
Changeup
Spin Rate Avg
1945
Changeup
Total Movement Avg
Slider
Velocity Avg
73.4
Slider
Spin Rate Avg
2101
Slider
Total Movement Avg
2024 New England Top Prospect Games @ Clark University (Invite Only)
Jun 18, 2024
Trackman - Fastball
79.2
Velocity (max)
73.7 - 77.7
Velo Range
73.9
Eff Velocity (avg)
1,878
Spin Rate (max)
1,786
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Slider
71.6
Velocity (max)
68.1 - 71.3
Velo Range
67.3
Eff Velocity (avg)
1,918
Spin Rate (max)
1,836
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Scout Day: Technique Tigers 8.12.23
Aug 12, 2023
Trackman - Fastball
82.1
Velocity (max)
79.8 - 81.6
Velo Range
79.4
Eff Velocity (avg)
1,930
Spin Rate (max)
1,853
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Slider
78.4
Velocity (max)
73.9 - 76.8
Velo Range
73.8
Eff Velocity (avg)
2,113
Spin Rate (max)
2,012
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
2023 Connecticut Preseason College ID
Jan 16, 2023
Trackman - Fastball
78.1
Velocity (max)
74.7 - 78.1
Velo Range
74.5
Eff Velocity (avg)
2,021
Spin Rate (max)
1,961
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
70.4
Velocity (max)
68.1 - 69.9
Velo Range
66.0
Eff Velocity (avg)
2,339
Spin Rate (max)
2,302
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
71.7
Velocity (max)
71.6 - 71.7
Velo Range
70.9
Eff Velocity (avg)
1,974
Spin Rate (max)
1,945
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)

Pitch Scores

Pitching Velos

Game Performance

2023
10 Yard Dash
1.65
60 Yard Dash
6.82
Top Speed (MPH)
Scout Day: Technique Tigers 8.12.23
Aug 12, 2023
Swift
1.65
10-yd
6.82
60-yd
19.8
Run speed (max)

Visual Edge

Pitch Ai

Notes

Comments

6/18/24
6-foot, 170-pound left-handed pitcher and right-handed hitting outfielder. Ran a 6.63 sixty at the event. The setup at the plate is even in base with the hands set low. The path to the ball is uphill and he hits off his front foot. The approach in the outfield is athletic and appropriate. He threw 81 mph from right field to the plate. On the mound, the delivery is solid in tempo and he pitches out of a 3/4 slot. The direction to the plate needs to stay online and the back foot needs to stay anchored. The fastball sat 78-79 mph with minimal arm side action to it. The slider was 71-72 mph and solid in depth.
8/12/23

Alvin Rosario III: LHP/OF, (2025) St Joseph, CT. 6-foot, 156-pound lean athletic frame. Raw projectable at the plate, Rosario iii's 93 mph exit velocity ranks him 1st at the event. (78.9 mph bat speed average). (24.2 mph hand speed average). Started in a wide balanced stance with an active load, then used a big leg kick. Bat speed was electric, used a level upward swing plane and good extension on his high finish. In his round he found multiple barrels with tons of loud contact. Aggressive gap to gap approach. Above average advanced his best position velocity in the outfield was registered at 84 mph; shows athletic quick feet, soft hands, and a twitchy exchange. Laterally, movements were athletic and fielded the ball out front. Consistent accuracy to the bag, used a high ¾ slot with a loose arm action. Showed his athleticism during the event with a sub-seven 60 time of 6.82. Solid projectable on the mound, showed quick arm speed, also used a high ¾ arm angle with a long loose arm action. Tall-and-fall up-tempo type pitcher who shows some effort. During his delivery balance point is tall with in line shoulders. Lands square with an athletic balanced finish. Produced a fastball that came in at 80-82 mph; has control down in the zone and sinking action with heavy movement. (Max spin 1929; Avg 1853). Threw a 11/5 slider (76-78) with glove side command and late hard action. (Max spin 2112; Avg 2011).  Love the projection off the mound, arm is quick and electric at times. 

Exit Velocity: 93 mph

Arm Velocity: 84 mph

Sixty-Yard Dash: 6.82

1/15/23

Alvin Rosario III: LHP/OF, (2025) St Joseph, CT. 6-foot, 156-pound lean athletic frame. Raw during batting practice, the right-handed hitter displayed an exit velocity of 82 mph, Ranks #1 with EV at the event. Started in a tall athletic stance with a smooth tight load, then used a short controlled stride. Has a short simple swing plane, quick bat speed and good extension on his high finish. He created loud contact and found lots of barrels. Up the middle aggressive approach. Projectable from the outfield, he showed the ability to throw at velocities up to 80 mph; showed soft hands, athletic quick feet, and a clean exchange. Fields the ball out front, movements laterally were quick. Used a long loose arm action with a high ¾ slot while showing consistent accuracy to the bag. Raw projectable on the mound, showed quick arm speed with a high ¾ arm angle and a loose quick arm action. Tall-and-fall up-tempo type pitcher and uses easy effort. Has in line shoulder with an strong balance point. Lands square with an athletic finish. Produced a fastball that came in at 74-77 mph with a max of 78 mph; showed arm side command and sinking action. (Max spin 2021; Avg 1961). His changeup (71-72) showed arm side command and fading swing and miss action. Has down in the zone control and late tight action on his 11/5 slider (68-70). (Max spin 2339; Avg 2302). 

Exit Velocity: 82 mph

Arm Velocity:  80 mph

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