67.8
Velocity (max)
12/06/24
CLASS OF 2028
LHP
CHIN-KAI
CHOU 周晉愷
Tainan Municipal ChongMing Junior High School (HS) • TW
5' 7" • 105.4LBS
L/L • 15yr 2mo
5' 7" • 105.4LBSL/L • 15yr 2mo
Rankings
2028 National
Rankings available to Premium Subscriber
Commitment
UNCOMMITTED
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Best Of Stats
Fastball
66.1 - 67.8
Velo Range
12/06/24
1754
Spin Rate (avg)
12/06/24
Changeup
60.5 - 61.6
Velo Range
12/06/24
1429
Spin Rate (avg)
12/06/24
Slider
56.7 - 57.9
Velo Range
12/06/24
2096
Spin Rate (avg)
12/06/24
Positional Tools
Hitting
Hitting
Pitching
2024
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Fastball
Velocity Max
The maximum observed fastball velocity in the given event year. Measured in miles per hour (MPH).
67.8
Fastball
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
66.9
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).
1754
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.
26.2
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).
Changeup
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
61.0
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).
1429
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).
Slider
Velocity Avg
The average velocity for all pitches of this type in the given event year. Measured in miles per hour (MPH).
57.3
Slider
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
Slider
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
67.8
Velocity (max)
66.1 - 67.8
Velo Range
66.2
Eff Velocity (avg)
1,841
Spin Rate (max)
1,754
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
58.2
Velocity (max)
56.7 - 57.9
Velo Range
56.2
Eff Velocity (avg)
2,153
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
61.7
Velocity (max)
60.5 - 61.6
Velo Range
60.5
Eff Velocity (avg)
1,492
Spin Rate (max)
1,429
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Spin Efficiency % (avg)
Trackman - Sinker
67.8
Velocity (max)
66.0 - 67.8
Velo Range
66.2
Eff Velocity (avg)
1,841
Spin Rate (max)
1,777
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
2024
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
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.
Taiwan Select Showcase
Dec 6, 2024
Pitch Scores - Fastball
Rise+
Pitch Scores - Sinker
Rise+
Pitch Scores - Slider
Hammer+
Sweep+
Pitching Velos
Game Performance
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：周晉愷
基本資料 學校：南市崇明國中 守備位置：投手 投打習性：左投 / 左打 身高 / 體重：5呎7吋 / 105.4磅 體型纖瘦 直球 球速：最快67.8英里 / 範圍66.1~67.8英里 轉速：最快1840 / 平均1754 位移數據： 垂直位移：最大16.4 / 平均15.4 橫向位移：最大-17.2 / 平均-18.1 出手延伸：6.2英尺 旋轉效率：98% 具備良好的旋轉效率（98%），以橫向位移為主，帶有自然伸卡/二縫特性 滑球 球速：最快58.2英里 / 範圍56.7~57.9英里 轉速：最快2153 / 平均2096 位移數據： 垂直位移：最大0.8 / 平均-1.5 橫向位移：最大15.3 / 平均12.7 出手延伸：5.6英尺 評價：橫向位移明顯（最大15.3），有發展為 Sweeper的潛質 變速球 球速：最快61.7英里 / 範圍60.5~61.6英里 轉速：最快1496 / 平均1428 位移數據： 垂直位移：最大7.7 / 平均6.0 橫向位移：最大-13.8 / 平均-16.3 出手延伸：6.2英尺 Zone%：83%
綜合評價
周晉愷是一名發展潛力較高的左投選手，雖然目前身材纖瘦，但具備良好的出手延伸（6.2英尺）與穩定的旋轉效率。直球橫向位移明顯，具伸卡/二縫性；滑球曲幅大，潛力可發展為 Sweeper；變速球穩定性強，是目前的特色武器。若能提升力量與球速，其多變的球路組合將為他在未來的比賽中帶來優勢。
Player: Chin-Kai Chou
School: Tainan Chong-Ming Junior High School Position: Pitcher B/T: LHP / LHH Ht/Wt: 5'7" / 105.4 lbs Fastball Velocity: Max 67.8 mph, Range 66.1–67.8 mph Spin Rate: Max 1840 rpm, Avg 1754 rpm Movement: Vertical: Max 16.4", Avg 15.4"; Horizontal: Max -17.2", Avg -18.1" Extension: 6.2 ft Spin Efficiency: 98% Characteristics: Excellent spin efficiency (98%) with significant horizontal movement, displaying natural sinker/two-seam action. Slider Velocity: Max 58.2 mph, Range 56.7–57.9 mph Spin Rate: Max 2153 rpm, Avg 2096 rpm Movement: Vertical: Max 0.8", Avg -1.5"; Horizontal: Max 15.3", Avg 12.7" Extension: 5.6 ft Characteristics: Significant horizontal movement (max 15.3") with potential to develop into a Sweeper. Changeup Velocity: Max 61.7 mph, Range 60.5–61.6 mph Spin Rate: Max 1496 rpm, Avg 1428 rpm Movement: Vertical: Max 7.7", Avg 6.0"; Horizontal: Max -13.8", Avg -16.3" Extension: 6.2 ft Zone %: 83% Characteristics: Highly stable pitch with consistent movement, serving as a key weapon.
Overall Evaluation
Chin-Kai Chou is a left-handed pitcher with notable development potential. Despite his slender build, he demonstrates excellent extension (6.2 ft) and stable spin efficiency across his pitch arsenal. His fastball exhibits significant horizontal movement with sinker/two-seam characteristics. The slider shows substantial sweep potential with pronounced horizontal break (max 15.3"). His changeup is a reliable and stable pitch, marked by consistent movement and high Zone% (83%). With improvements in strength and velocity, Chou’s diverse pitch repertoire could provide a strong competitive advantage in future games.