Prep Baseball Report
Pierce OBrien

CLASS OF 2028

1B
OF

Pierce
OBrien

Bishop Montgomery (HS) • CA
6' 5" • 236LBS
L/R • 17yr 2mo
Travel Team: 16U Legacy National
2028 National

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2028 State

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Best of Snapshot
Physical
Positional Tools Velos / Pop
TrackMan Hitting
Blast
VALD
News
Comments
Contact

Best Of Stats

Hitting
21.2
Hand Speed (max)
1/11/26
71.9
Bat Speed (max)
1/11/26
12.2
Rot. Acc (max)
1/11/26
90
Hard Hit %
1/11/26
Power
104
Exit Velocity (max)
1/11/26
90.6
Exit Velocity (avg)
1/11/26
295
Distance (max)
1/11/26
40
Sweet Spot %
1/11/26
Run
8.40
60-yd
1/11/26
4.16
30-yd
1/11/26
1.67
10-yd
1/11/26
16.4
Run speed (max)
1/11/26
Defense
78
INF Velo
1/11/26
82
OF Velo
1/11/26
-
C Velo
-
Pop Time

Positional Tools

2026
Infield Velocity
78.0
Outfield Velocity
82.0
Los Angeles Preseason ID
Jan 11, 2026
Position
78
INF Velo
82
OF Velo

Hitting

2026
Exit Velocity Max
104.0
Exit Velocity Avg
90.6
Distance Max
295
Distance Avg
99
Launch Angle Avg
2.2036
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %
Los Angeles Preseason ID
Jan 11, 2026
Trackman - Hitting
104.0
Exit Velocity (max)
90.6
Exit Velocity (avg)
99
Distance (avg)
295
Distance (max)
Hard Hit %
Sweet Spot %
Line Drive %
Fly Ball %
Ground Ball %

Hitting

2026
Hand Speed Max
21.2
Hand Speed Avg
20.1
Bat Speed Max
71.9
Bat Speed Avg
66.1
Rotational Acceleration Max
Rotational Acceleration Avg
On-Plane Efficiency Max
On-Plane Efficiency Avg
Los Angeles Preseason ID
Jan 11, 2026
Blast - Hitting
21.2
Hand Speed (max)
20.1
Hand Speed (avg)
71.9
Bat Speed (max)
66.1
Bat Speed (avg)
Rot. Acc (max)
Rot. Acc (avg)
On Plane Eff (avg)
MaxOnPlaneEfficiency

Pitching

Pitch Scores

Pitching Velos

Game Performance

2026
10 Yard Dash
1.67
30 Yard Dash
4.16
60 Yard Dash
8.39
Top Speed (MPH)
Los Angeles Preseason ID
Jan 11, 2026
Vald
1.67
10-yd
4.16
30-yd
8.40
60-yd
16.4
Run speed (max)

Vizual Edge

Pitch Ai

Notes

Comments

1/11/26
Pierce OBrien, Bishop Montgomery High (CA), 2028
Positional Profile: 1B/OF Developing OF/1B with evident power at the plate and projectable offensive upside.
Body: 6-4, 236-pounds. Physical, atheltic frame with sturdy lower half.
Hit: LHH. Relaxed, balance stance with high, quiet hands and slight bat wrap. Rhythmic hand movement that syncs with a short forward stride. Compact swing with tight, powerful turns on a controlled and engaged lower half. Gets the barrel out early resulting in significant pull-side power. 66.1 mph bat speed with 11 G's of rotational acceleration.
Power: 104 max exit velocity, averaged 90.6 mph. 295' max distance.
Arm: RH. INF-78 mph. OF-82 mph. Smooth, low effort arm action that comes out of a 3/4 slot.
Defense: OF: Gets deep into the legs while fielding and engages back leg into the throw. 1B: Squatted position with noticeable forward hip hinge.
ATH: 8.40 runner in the 60. 1.67 and 4.16 in the 10 and 30 yard splits.
1/11/26
O'Brien was another summer cirucit find who showed well during a quick look at the Prep Baseball West Coast Program Invite. The LA Preseason ID served as his debut event for the Prep Baseball California event platform and it was an impressive one. Physically well built at present the corner profile OF/1B defender checked in at 6'5 236 lbs. with room for polish to his frame in the future. He is a sound defender in the OF and on the dirt at 1B with a solid present arm that profiles more accuracy than power with 78 MPH INF/82 MPH OF velocities. Where he LH hitter shines brightest is once he steps into the batters box. My live look at Pierce included two at bats where his operation look confident and controlled during a game setting, but the metrics he produced on this day raised interest to another level in his future potential. O'Brien has a relatively simple operation for a larger framed player with solid overall swing metrics including quickness in both his hand and bat speed (21.2 MPH hand & 71.9 MPH bat) with solid ability to produce torque during his swing (12.2 Gs of rotational acceleration). The strength in his frame helps generate loud, hard contact on a regular basis for O'Brien who had a 90% hard hit rate (balls over 90 MPH) with a peak at 104 MPH from a more direct swing that gears more towards present line drives than fly balls (40% sweet spot rate). The strength in his profile has plenty of intriguing power potential as he learns to elevate the ball more especially to the pull side of the field.

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Physical

2026
Grip Strgth (LH)
Grip Strgth (RH)
Los Angeles Preseason ID
Jan 11, 2026
Physical - Athlete
6' 4"
Ht
236.0
Wt
Grip Strgth (RH)
Grip Strgth (LH)