24
Hand Speed (max)
10/08/23
CLASS OF 2027
2B
OF
Jack
Serafini
Milton Academy (HS) • MA
6' 0" • 145LBS
R/R • 15yr 3mo
Travel Team: GBG Northeast
6' 0" • 145LBS
R/R • 15yr 3mo
Travel Team: GBG Northeast
Rankings
2027 National
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
70.8
Bat Speed (max)
8/09/23
13.4
Rot. Acc (max)
10/08/23
-
Hard Hit %
82
Exit Velocity (max)
8/09/23
71.9
Exit Velocity (avg)
8/09/23
253
Distance (max)
8/09/23
60
Sweet Spot %
8/09/23
7.7
60
10/08/23
-
30-yd
-
10-yd
-
Run speed (max)
71
INF Velo
8/09/23
-
OF Velo
-
C Velo
-
Pop Time
Fastball
73.3
Velocity (max)
10/08/23
72 - 73
Velo Range
10/08/23
1842
Spin Rate (avg)
8/09/23
Curveball
60 - 62
Velo Range
10/08/23
1454
Spin Rate (avg)
8/09/23
Positional Tools
2023
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
7.70
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
71.0
Power / Speed Score
A simple calculation that divides the athlete’s Exit Velocity Max by the athlete’s 60 Yard Dash time for the given event year. For example, 98 MPH / 7.00s = 14.00.
10.7
Hitting
2023
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
82.0
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
69.2
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
253
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
170
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
21.8
Hard Hit %
Percentage of batted balls with exit velocities over 95 MPH in the given event year.
Sweet Spot %
Percentage of batted balls in the given event year with a launch angle between 8° and 32°.
Line Drive %
Percentage of batted balls with launch angles between 10 and 25 degrees in the given event year.
Fly Ball %
Percentage of batted balls with launch angles between 25 and 50 degrees in the given event year.
Ground Ball %
Percentage of batted balls with launch angles below 10 degrees in the given event year.
2023 Massachusetts Fall Prospect Showcase
Oct 8, 2023
Trackman - Hitting
79.9
Exit Velocity (max)
65.4
Exit Velocity (avg)
159
Distance (avg)
247
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
2023 New England Future 50 - Class of 2027 (Invite Only)
Aug 9, 2023
Trackman - Hitting
82.0
Exit Velocity (max)
71.9
Exit Velocity (avg)
177
Distance (avg)
253
Distance (max)
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Hitting
2023
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
24.0
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
20.2
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
70.8
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
65.8
Rotational Acceleration Max
The highest Rotational Acceleration of any swing in the given event year.
Rotational Acceleration Avg
The average Rotational Acceleration for all swings in the given event year.
On-Plane Efficiency Max
The highest On-Plane Efficiency of any swing in the given event year.
On-Plane Efficiency Avg
The average On-Plane Efficiency for all swings in the given event year.
2023 Massachusetts Fall Prospect Showcase
Oct 8, 2023
Blast - Hitting
24.0
Hand Speed (max)
20.6
Hand Speed (avg)
67.3
Bat Speed (max)
64.7
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
2023 New England Future 50 - Class of 2027 (Invite Only)
Aug 9, 2023
Blast - Hitting
21.0
Hand Speed (max)
19.7
Hand Speed (avg)
70.8
Bat Speed (max)
67.3
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
73.3
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
70.0
Fastball
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
1790
Fastball
Spin Score Avg
The average Bauer Units value of all fastballs in the given event year. Bauer Units are calculated for each pitch by dividing Spin Rate by Velocity.
25.6
Fastball
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
59.4
Curveball
Spin Rate Avg
The average rate of spin for all pitches of this type in the given event year. Measured in rotations per minute (RPM).
1451
Curveball
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
2023 Massachusetts Fall Prospect Showcase
Oct 8, 2023
Trackman - Fastball
73.3
Velocity (max)
67.6 - 71.9
Velo Range
68.9
Eff Velocity (avg)
1,940
Spin Rate (max)
1,759
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Curveball
62.8
Velocity (max)
58.6 - 61.5
Velo Range
58.2
Eff Velocity (avg)
1,549
Spin Rate (max)
1,449
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
2023 New England Future 50 - Class of 2027 (Invite Only)
Aug 9, 2023
Trackman - Fastball
72.8
Velocity (max)
68.7 - 72.1
Velo Range
68.8
Eff Velocity (avg)
1,937
Spin Rate (max)
1,842
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Curveball
59.5
Velocity (max)
58.5 - 59.5
Velo Range
55.8
Eff Velocity (avg)
1,483
Spin Rate (max)
1,454
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Pitch Scores
2023
Fastball
Rise+
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
Pitching Velos
2023
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
73.0
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
72.5
Curveball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH)
61.0
Game Performance
2023
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
Visual Edge
Pitch Ai
Notes
News
- 2023 Massachusetts Fall Prospect Showcase Advanced Metrics: Hitting Leaderboard - Oct 9, 2023
- 2023 Massachusetts Fall Prospect Showcase Advanced Metrics: Trackman Analytics - Pitching Leaderboard - Oct 9, 2023
- 2023 Massachusetts Fall Prospect Showcase - Quick Hits - Oct 9, 2023
- Results From 2023 Massachusetts Fall Prospect Showcase - Oct 9, 2023
- 2023 New England Future 50: Class of 2027 - Quick Hits - Aug 15, 2023
- 2023 New England Future 50: Class of 2027 Advanced Metrics: Hitting Leaderboard - Aug 11, 2023
- 2023 New England Future 50: Class of 2027 Advanced Metrics: Trackman Analytics - Pitching Leaderboard - Aug 11, 2023
- Results From 2023 New England Future 50: Class of 2027 - Aug 10, 2023
Comments
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Jack Serafini: 2B/RHP, (2027) Milton Academy, MA. 5-foot-11, 130-pound athletic lean build. Projectable and athletic in the box, Serafini had a max exit velocity of 80 mph. (64.7 mph bat speed average). (20.6 mph hand speed average). Started in a balanced wide stance with a handsy load, then used a small stride. Bat speed is developing, uses a flat loose swing plane and level finish. Found multiple barrels with loud contact. Gap to gap approach. Capable in the infield, his best throw was registered at 70 mph; has developing soft hands, developing athletic feet, and a clean natural exchange. Fields the ball out front, movements laterally were developing athletically. Showed consistent accuracy to the base with a high ¾ slot. In the 60-yard dash, recorded a time of 7.7. Capable on the mound, showing developing arm speed he had a ¾ arm angle with a consistent arm action. Feel type pitcher and used some effort. Balance point is tall with in line shoulders during delivery. Lands closed with a falling off finish. Threw his fastball 72-73 mph; had control arm side around the zone and running action. (Max spin 1939; Avg 1759). His curveball (60-62) shows sweeping action and glove side command. (Max spin 1548; Avg 1449).
Jack Serafini: 2B/RHP, (2027) Milton Academy, MA. 5-foot-11, 130-pound slim athletic build. Projectable and athletic during batting practice, Serafini's best exit velocity was 82 mph. (67.3 mph bat speed average). (19.7 mph hand speed average). Began in a wide tall stance with a wrapping load, then used a small stride. Bat speed was developing, had a loose uphill swing plane and high finish. Barreled up some balls with some loud contact. Line drive approach. Capable while in the infield, recorded position velocities up to 71 mph; has developing hands, a natural exchange, and developing athletic feet. Laterally, movements were developing athletically and fielded the ball out front. Had a high ¾ slot with consistent accuracy to the bag. During the event, clocked a 60 time of 8.0. Capable on the mound, showed consistent arm action and a high ¾ arm angle with developing arm speed Feel type pitcher and showed some effort. Tall balance point with in line shoulders. Lands closed with a falling off finish. Threw his fastball 71-72 mph; shows arm side control and running action. (Max spin 1936; Avg 1842). Has sweeping action and glove side command on his curveball (58-59). (Max spin 1483; Avg 1454).