Stephen Kwak
Stephen Kwak
Stephen Kwak

CLASS OF 2021

RHP

Stephen
Kwak

Pomona-Pitzer Colleges
Bellarmine College Prep (HS) • CA
6-3 • 205LBS • R/R
Travel Team: California Bulldogs

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2021 National

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2021 State

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Best of Snapshot
TrackMan Pitching
Pitch Scores
Pitching Velos
News
Comments
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Best Of Stats

Pitching

Fastball

89.9
Velocity (max)
2/06/21
86.2 - 88.8
Velo Range
2/06/21
2310
Spin Rate (avg)
2/06/21

Changeup

81 - 81
Velo Range
2/06/21
2159
Spin Rate (avg)
9/26/20

Curveball

72 - 74
Velo Range
2/06/21
2424
Spin Rate (avg)
2/06/21

Slider

72.6 - 74.4
Velo Range
9/05/20
2476
Spin Rate (avg)
9/26/20

Positional Tools

Hitting

Hitting

Pitching

2021
2020
Fastball
Velocity Max
89.9
Fastball
Velocity Avg
87.5
Fastball
Spin Rate Avg
2310
Fastball
Spin Score Avg
26.4
Fastball
Total Movement Avg
Curveball
Velocity Avg
72.8
Curveball
Spin Rate Avg
2424
Curveball
Total Movement Avg
Changeup
Velocity Avg
81.1
Changeup
Spin Rate Avg
1779
Fastball
Velocity Max
87.5
Fastball
Velocity Avg
84.3
Fastball
Spin Rate Avg
2291
Fastball
Spin Score Avg
27.2
Fastball
Total Movement Avg
Curveball
Velocity Avg
69.5
Curveball
Spin Rate Avg
2360
Curveball
Total Movement Avg
Slider
Velocity Avg
73.6
Slider
Spin Rate Avg
2446
Slider
Total Movement Avg
Splitter
Velocity Avg
77.1
Splitter
Spin Rate Avg
712
Splitter
Total Movement Avg
Preseason All-State (2021/2022)
Feb 6, 2021
Trackman - Fastball
89.9
Velocity (max)
86.2 - 88.7
Velo Range
85.1
Eff Velocity (avg)
2,451
Spin Rate (max)
2,310
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
74.0
Velocity (max)
72.0 - 73.6
Velo Range
69.5
Eff Velocity (avg)
2,731
Spin Rate (max)
2,424
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - ChangeUp
81.1
Velocity (max)
1,779
Spin Rate (max)
1,779
Spin Rate (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Norcal Uncommitted Senior Games
Sep 26, 2020
Trackman - Fastball
87.5
Velocity (max)
83.2 - 86.4
Velo Range
83.0
Eff Velocity (avg)
2,444
Spin Rate (max)
2,274
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
70.7
Velocity (max)
68.8 - 70.3
Velo Range
66.9
Eff Velocity (avg)
2,420
Spin Rate (max)
2,381
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
74.0
Velocity (max)
74.0 - 74.0
Velo Range
72.2
Eff Velocity (avg)
2,548
Spin Rate (max)
2,476
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Trackman - ChangeUp
83.2
Velocity (max)
81.6
Eff Velocity (avg)
2,159
Spin Rate (max)
2,159
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Splitter
77.1
Velocity (max)
74.4
Eff Velocity (avg)
712
Spin Rate (max)
712
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
BAWS Games 2020
Sep 5, 2020
Trackman - Fastball
87.3
Velocity (max)
82.8 - 85.2
Velo Range
82.4
Eff Velocity (avg)
2,537
Spin Rate (max)
2,300
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Curveball
70.2
Velocity (max)
68.7 - 70.2
Velo Range
66.8
Eff Velocity (avg)
2,527
Spin Rate (max)
2,340
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %
Trackman - Slider
75.0
Velocity (max)
72.6 - 74.4
Velo Range
71.6
Eff Velocity (avg)
2,577
Spin Rate (max)
2,440
Spin Rate (avg)
IVB (max)
IVB (avg)
HM (max)
HM (avg)
Extension (avg)
Release Ht (avg)
Spin Score (max)
Zone %

Pitch Scores

2021
2020
Fastball
Hop+
Fastball
Sink+
Fastball
Rise+
Curveball
Hammer+
Curveball
Sweep+
Fastball
Hop+
Fastball
Sink+
Fastball
Rise+
Curveball
Hammer+
Curveball
Sweep+
Slider
Hammer+
Slider
Sweep+
Preseason All-State (2021/2022)
Feb 6, 2021
Pitch Scores - Fastball
Hop+
Rise+
Sink+
Pitch Scores - Curveball
Hammer+
Sweep+
Norcal Uncommitted Senior Games
Sep 26, 2020
Pitch Scores - Fastball
Hop+
Rise+
Sink+
Pitch Scores - Curveball
Hammer+
Sweep+
Pitch Scores - Slider
Hammer+
Sweep+
BAWS Games 2020
Sep 5, 2020
Pitch Scores - Fastball
Hop+
Rise+
Sink+
Pitch Scores - Curveball
Hammer+
Sweep+
Pitch Scores - Slider
Hammer+
Sweep+

Pitching Velos

2021
2020
Fastball
Velocity Max
89.0
Fastball
Velocity Avg
87.0
Curveball
Velocity Avg
73.0
Changeup
Velocity Avg
81.0
Fastball
Velocity Max
88.0
Fastball
Velocity Avg
84.5
Curveball
Velocity Avg
69.5
Slider
Velocity Avg
73.8
Preseason All-State (2021/2022)
Feb 6, 2021
Pitching
89
Max FB
85 - 89
FB
72 - 74
CB
81 - 81
CH
Norcal Uncommitted Senior Games
Sep 26, 2020
Pitching
88
Max FB
83 - 86
FB
69 - 71
CB
74 - 74
SL
77 - 77
SPL
BAWS Games 2020
Sep 5, 2020
Pitching
87
Max FB
83 - 86
FB
68 - 70
CB
72 - 75
SL

Game Performance

Visual Edge

Pitch Ai

Notes

Comments

2/06/21

Body: 6-3, 205-pounds. Square frame, length throughout and strength present. Frame will continue to firm up as he matures.
DeliverySlower tempo with lift and sit delivery; build momentum and carries arm downhill before exploding on hitters. Gets down the hill and front leg absorbs energy well.
Arm Action: RH. Compact, over the top; ball is hidden for a long time and easy through the slot and out front.
FB: T89.4, 85-89 mph. Firm in the zone and ability to spot down and away; times where he can cut it a bit. Also goes up in zone when needing it.
CB72-74 mph. High spin (2731 Max), 12/6 shape with depth into and out of zone. Feel and control of pitch.
SL68-69 mph. Similar profile to CB with more horizontal break at the end.
CH81 mph. Circle change with downer actions.

9/26/20

Positional Profile: RHP
Body: 6-3, 190-pounds. Tall and broad body type, outstanding frame for future size and strength gains.
Delivery: Simple, starts in stretch, medium knee lift, good direction, falls to 1B side a bit, uses lower half well.
Arm Action: RH. Medium depth on backside, has leverage, overhand slot, hides ball well, strong fast arm.
FB: T88, 83-86 mph. Quick with length through zone, deceptive, has ride, fairly straight but gets swing/miss up in zone.
CB: 69-71 mph. Big 11/6 shape, tight spin, depth to bottom of zone, feel for it, classic overhand CB.
SL: 74 mph. Effective difference from CB, a little harder with lateral break and depth, spins well, capable swing/miss pitch.
CH: 83 mph. Slight differential off FB, showed feel, potential power type change, uses as his fourth pitch.
CUT: 77 mph.

9/06/20

Bay Area World Series 2020 (BAWS) - Uncommitted; Big frame, seemed to get stronger as he went over his 3 IP, FB steady 85-87 (max 2536 spin, 2300 avg spin), feel for both CB (max 2527 spin, avg 2339) and SL (2577 max spin, avg 2440), high slot and appeared to difficult for hitters to square up, outstanding mound presence as well.

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