Prep Baseball Report
Rex Book
Rex Book

CLASS OF 2027

1B
RHP

Rex
Book

Home School (HS) • MI
6' 5" • 244LBS
R/R • 17yr 6mo
Travel Team: Motor City Hit Dogs 16u Yates scout team

Rankings

2027 National

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2027 State

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Best of Snapshot
Physical
Positional Tools Velos / Pop
TrackMan Hitting
TrackMan Pitching
Pitching Velos
VALD
Vizual Edge
News
Comments
Contact

Best Of Stats

Hitting
-
Hand Speed (max)
-
Bat Speed (max)
-
Rot. Acc (max)
36
Hard Hit %
6/09/26
Power
92.3
Exit Velocity (max)
6/09/26
82.3
Exit Velocity (avg)
6/09/26
329
Distance (max)
6/09/26
36
Sweet Spot %
6/09/26
Run
7.87
60-yd
6/09/26
-
30-yd
-
10-yd
-
Run speed (max)
Defense
83
INF Velo
6/09/26
-
OF Velo
-
C Velo
-
Pop Time
Pitching

Fastball

84.1
Velocity (max)
2/16/25
81.5 - 84
Velo Range
2/16/25
1991
Spin Rate (avg)
2/16/25

Changeup

71.4 - 76.4
Velo Range
6/09/26
1244
Spin Rate (avg)
6/09/26

Curveball

68.9 - 69.6
Velo Range
2/16/25
2590
Spin Rate (avg)
2/16/25

Slider

71.3 - 75.1
Velo Range
2/16/25
1979
Spin Rate (avg)
2/16/25

Positional Tools

2026
Infield Velocity
83.0

Hitting

2026
Exit Velocity Max
92.3
Exit Velocity Avg
82.3
Distance Max
329
Distance Avg
182
Launch Angle Avg
18.5624
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
2026 Michigan TPG Trials
Jun 9, 2026
Trackman - Hitting
92.3
Exit Velocity (max)
82.3
Exit Velocity (avg)
182
Distance (avg)
329
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %

Hitting

Pitching

2026
2025
Fastball
Velocity Max
79.2
Fastball
Velocity Avg
68.6
Fastball
Spin Rate Avg
1527
Fastball
Spin Score Avg
22.9
Fastball
Total Movement Avg
Curveball
Velocity Avg
67.1
Curveball
Spin Rate Avg
1881
Curveball
Total Movement Avg
Changeup
Velocity Avg
73.9
Changeup
Spin Rate Avg
1244
Changeup
Total Movement Avg
Cutter
Velocity Avg
80.7
Cutter
Spin Rate Avg
1565
Cutter
Total Movement Avg
Sinker
Velocity Avg
78.0
Sinker
Spin Rate Avg
1621
Sinker
Total Movement Avg
Fastball
Velocity Max
84.1
Fastball
Velocity Avg
82.7
Fastball
Spin Rate Avg
1991
Fastball
Spin Score Avg
24.1
Fastball
Total Movement Avg
Curveball
Velocity Avg
69.3
Curveball
Spin Rate Avg
2590
Curveball
Total Movement Avg
Changeup
Velocity Avg
74.7
Changeup
Spin Rate Avg
1077
Changeup
Total Movement Avg
Slider
Velocity Avg
73.2
Slider
Spin Rate Avg
1979
Slider
Total Movement Avg
2026 Michigan TPG Trials
Jun 9, 2026
Trackman - Fastball
79.2
Velocity (max)
58.0 - 79.2
Velo Range
66.3
Eff Velocity (avg)
1,560
Spin Rate (max)
1,527
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Curveball
69.5
Velocity (max)
65.5 - 68.7
Velo Range
65.6
Eff Velocity (avg)
2,066
Spin Rate (max)
1,881
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - ChangeUp
76.4
Velocity (max)
71.4 - 76.4
Velo Range
72.2
Eff Velocity (avg)
1,306
Spin Rate (max)
1,244
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Cutter
82.4
Velocity (max)
78.9 - 82.4
Velo Range
79.6
Eff Velocity (avg)
1,880
Spin Rate (max)
1,565
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - Sinker
78.0
Velocity (max)
76.0
Eff Velocity (avg)
1,621
Spin Rate (max)
1,621
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
2025 Central Michigan Preseason All-State (Invite Only)
Feb 16, 2025
Trackman - Fastball
84.1
Velocity (max)
81.5 - 84.0
Velo Range
82.6
Eff Velocity (avg)
2,080
Spin Rate (max)
1,991
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
69.6
Velocity (max)
68.9 - 69.6
Velo Range
68.5
Eff Velocity (avg)
3,862
Spin Rate (max)
2,590
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
75.1
Velocity (max)
71.3 - 75.1
Velo Range
74.1
Eff Velocity (avg)
2,053
Spin Rate (max)
1,979
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)
Trackman - ChangeUp
75.5
Velocity (max)
74.2 - 75.4
Velo Range
74.2
Eff Velocity (avg)
1,265
Spin Rate (max)
1,077
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Spin Efficiency % (avg)

Pitch Scores

2026
Curveball
Hammer+
Curveball
Sweep+
2026 Michigan TPG Trials
Jun 9, 2026
Pitch Scores - Curveball
Hammer+
Sweep+

Pitching Velos

2026
Fastball
Velocity Max
79.0
Fastball
Velocity Avg
68.5
Curveball
Velocity Avg
67.0
Changeup
Velocity Avg
73.5
2026 Michigan TPG Trials
Jun 9, 2026
Pitching
79
Max FB
58 - 79
FB
65 - 69
CB
71 - 76
CH
79 - 82
CT

Game Performance

2026
60 Yard Dash
7.87
RSI
2026 Michigan TPG Trials
Jun 9, 2026
Vald
7.87
60-yd
1.18
RSI (max)

Vizual Edge

2026
Edge Score
52.29
2026 Michigan TPG Trials
Jun 9, 2026
Visual Skills
52.29
Edge Score

Pitch Ai

Notes

Comments

6/09/26
Rex Book, Home School (MI), 2027
Positional Profile: 1B/RHP
Body: 6-5, 244-pounds.
Arm Action: RH
FB: T79, 58-79 mph. T1560, 1527 average rpm.
CB: 65-69 mph. T2066, 1881 average rpm.
CH: 71-76 mph. T1306, 1244 average rpm.
CUT: 79-82 mph.
6/09/26
Rex Book, Home School (MI), 2027
Positional Profile: 1B/RHP
Body: 6-5, 244-pounds.
Hit: RHH
Power: 92 max exit velocity, averaged 82.3 mph. 329' max distance.
Arm: RH. INF-83 mph.

Draft Reports

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Physical

2026
Grip Strgth (LH)
Grip Strgth (RH)
2026 Michigan TPG Trials
Jun 9, 2026
Physical - Athlete
6' 5"
Ht
244.0
Wt
Grip Strgth (RH)
Grip Strgth (LH)