18.8
Hand Speed (max)
12/06/24
CLASS OF 2028
1B
RHP
CHIEH-YU
CHENG 鄭傑宇
Tainan Municipal Chong Ming Junior High School (HS) • TW
5' 8" • 196.6LBS
L/R • 15yr 6mo
5' 8" • 196.6LBSL/R • 15yr 6mo
Rankings
2028 National
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
78.8
Bat Speed (max)
12/06/24
6.6
Rot. Acc (max)
12/06/24
50
Hard Hit %
12/06/24
91.2
Exit Velocity (max)
12/06/24
88.6
Exit Velocity (avg)
12/06/24
21
Distance (max)
12/06/24
-
Sweet Spot %
8.13
60-yd
12/06/24
4.44
30-yd
12/06/24
1.95
10-yd
12/06/24
16.6
Run speed (max)
12/06/24
68
INF Velo
12/06/24
-
OF Velo
-
C Velo
-
Pop Time
Fastball
76.2
Velocity (max)
12/06/24
73.5 - 76.1
Velo Range
12/06/24
1892
Spin Rate (avg)
12/06/24
Changeup
61.8 - 65.1
Velo Range
12/06/24
1373
Spin Rate (avg)
12/06/24
Curveball
58.2 - 65
Velo Range
12/06/24
2096
Spin Rate (avg)
12/06/24
Positional Tools
2024
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60 Yard Dash
The athlete's fastest 60-yard dash time in the given event year. Measured in seconds (s)
8.13
Infield Velocity
The athlete's maximum throwing velocity from an infield position in the given event year. Measured in miles per hour (MPH).
68.0
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.
11.2
Hitting
2024
Exit Velocity Max
The highest exit velocity of any batted ball in the given event year. Measured in miles per hour (MPH).
91.2
Exit Velocity Avg
Average exit velocity of all batted balls in the given event year. Measured in miles per hour (MPH).
88.6
Distance Max
The highest flight distance of any batted ball in the given event year. Measured in feet (ft).
21
Distance Avg
Average flight distance of all batted balls in the given event year. Measured in feet (ft).
19
Launch Angle Avg
Average launch angle of all batted balls in the given event year. Measured in degrees.
-5.5
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.
Taiwan Select Showcase
Dec 6, 2024
Trackman - Hitting
91.2
Exit Velocity (max)
88.6
Exit Velocity (avg)
19
Distance (avg)
21
Distance (max)
Hard Hit %
Ground Ball %
Hitting
2024
Hand Speed Max
The highest Peak Hand Speed of any swing in the given event year.
18.8
Hand Speed Avg
The average Peak Hand Speed for all swings in the given event year.
17.0
Bat Speed Max
The highest Bat Speed of any swing in the given event year.
78.8
Bat Speed Avg
The average Bat Speed for all swings in the given event year.
67.8
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.
Taiwan Select Showcase
Dec 6, 2024
Blast - Hitting
18.8
Hand Speed (max)
17.0
Hand Speed (avg)
78.8
Bat Speed (max)
67.8
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency
Pitching
2024
Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
76.2
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
74.8
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).
1892
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.
25.3
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).
61.6
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).
2096
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).
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
63.4
Changeup
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).
1373
Changeup
Total Movement Avg
The average total non-gravity movement for all pitches of this type in the given event year. Measured in inches (in).
Taiwan Select Showcase
Dec 6, 2024
Trackman - Fastball
76.2
Velocity (max)
73.5 - 76.1
Velo Range
74.7
Eff Velocity (avg)
1,929
Spin Rate (max)
1,892
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
65.5
Velocity (max)
58.2 - 65.0
Velo Range
60.2
Eff Velocity (avg)
2,295
Spin Rate (max)
2,096
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
65.3
Velocity (max)
61.8 - 65.1
Velo Range
63.9
Eff Velocity (avg)
1,504
Spin Rate (max)
1,373
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
Pitching Velos
Game Performance
2024
10 Yard Dash
The athlete's fastest 0-10-yard split time in the given event year. Measured in seconds.
1.95
30 Yard Dash
The athlete's fastest 0-30-yard split time in the given event year. Measured in seconds.
4.43
60 Yard Dash
The athlete's fastest 0-60-yard time in the given event year. Measured in seconds.
8.13
Top Speed (MPH)
The athlete's fastest split time converted to miles per hour.
Vizual Edge
Pitch Ai
Notes
News
Comments
Draft Reports
Contact
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Physical
2024
Grip Strgth (LH)
Grip strength is a measure of a players bat control and ability to transfer power and speed during impact, measured in pounds of force generated; collected with elbow bent at 90 degrees.
Grip Strgth (RH)
Grip strength is a measure of a players bat control and ability to transfer power and speed during impact, measured in pounds of force generated; collected with elbow bent at 90 degrees.
球探報告：鄭傑宇
基本資料 學校：南市崇明國中 守備位置：一壘 / 投手 投打習性：右投（高壓類型） / 左打 身高 / 體重：5呎8吋 / 196.6磅 體型壯碩，具備強勁的力量潛力 打擊數據 Hard Hit%：50% 擊球初速：最快91.2英里 / 平均88.6英里 擊球類型：滾地球100% 守備數據 內野臂力速度：69英里 防守能力：判斷與步伐流暢性佳，展現出穩定的一壘守備表現。 投球數據 直球 速度：最快76.2英里 / 範圍73.5~76.1英里 轉速：最快1929 / 平均1892 最大垂直位移：19.1英里 / 平均17.0英里 出手延伸：6.2英尺 特色：具備突出的垂直位移，能有效壓制打者。 變速球 速度：最快65.3英里 / 範圍61.8~65.1英里 轉速：最快1501 / 平均1372 出手延伸：6.1英尺 曲球 速度：最快65.5英里 / 範圍58.2~65.0英里 轉速：最快2294 / 平均2095 最大垂直位移：-1.8英里 / 平均-4.9英里 最大橫向位移：-3.0英里 / 平均-5.1英里 Zone%：60%
綜合評價
鄭傑宇是一名力量型的選手，具備出色的擊球初速與Hard Hit%表現，是一名潛在的重砲手，擊球表現穩定，滾地球的比例較高，未來可透過調整打擊角度來改善。他的直球具備明顯的垂直位移優勢，能壓制打者，曲球則展現良好的旋轉率與區域控球能力。防守方面，他的步伐流暢且具備穩定性。未來可以透過加強靈活性與調整打擊擊球角度，進一步發展為攻守兼備的選手
Player: Chieh-Yu Cheng
School: Tainan Chong-Ming Junior High School Position: First Base / Pitcher B/T: RHP (High Arm Slot) / LHH Ht/Wt: 5'8" / 196.6 lbs Hitting Data Hard Hit %: 50% Max Exit Velocity: 91.2 mph Avg Exit Velocity: 88.6 mph Launch Profile: 100% ground balls Fielding Data Infield Arm Velocity: 69 mph Defensive Performance: Smooth footwork and judgment, providing consistent and reliable first-base defense. Pitching Data Fastball Max Velocity: 76.2 mph Velocity Range: 73.5–76.1 mph Spin Rate: Max 1929 RPM, Avg 1892 RPM Vertical Break: Max 19.1", Avg 17.0" Extension: 6.2 ft Evaluation: Notable vertical movement, effective at challenging hitters. Changeup Max Velocity: 65.3 mph Velocity Range: 61.8–65.1 mph Spin Rate: Max 1501 RPM, Avg 1372 RPM Extension: 6.1 ft Curveball Max Velocity: 65.5 mph Velocity Range: 58.2–65.0 mph Spin Rate: Max 2294 RPM, Avg 2095 RPM Vertical Break: Max -1.8", Avg -4.9" Horizontal Break: Max -3.0", Avg -5.1" Zone %: 60%
Overall Evaluation
Chieh-Yu Cheng is a power-focused player with a solid foundation and high potential. Offensively, his Hard Hit percentage (50%) and max exit velocity (91.2 mph) highlight his strong power potential, positioning him as a potential slugger. However, his current batted-ball profile is heavily skewed toward ground balls (100%), suggesting room for improvement in his launch angle to unlock more extra-base hit potential. Defensively, Cheng demonstrates smooth footwork and stable defensive skills at first base, supported by an arm velocity of 69 mph, making him a reliable option in the infield. On the mound, his fastball stands out with strong vertical movement, making it effective at suppressing hitters. His curveball shows good spin rate and control, while the changeup provides a useful speed differential to complement his fastball. Overall, Cheng is a strength-based player with the tools to develop into an impactful, well-rounded first baseman and pitcher. Enhancing his hitting approach, improving flexibility, and refining his secondary pitches will allow him to reach his full potential.