Joshua Báez & Historic MLB Rookie Debut Stat Explorer

3-4, 1 HR, 2B

Hits / Extra-Bases

2.000

Debut OPS

108.7 MPH

Peak Exit Velo

422 FT

Max Distance

99.2%

TWIB Historic Tier

Busch Stadium Ball-Flight Spray Chart

Scrubbing At-Bats: Joshua Báez electrified TWIB viewers with 8 total bases in his MLB debut, crushing a 422-foot home run to dead center and scorching a 104.1 MPH double off the left-center wall.

Pitch & Hit Telemetry AB #1 • HR

Pitch

4-Seam (96.4)

Count

2-2 • 1 Out

Exit Velo

108.7 MPH

Launch Angle

28°

Distance

422 FT

Expected BA

.985

Counterfactual Trajectory Lab

Exit Velocity108.7 MPH

Launch Angle28°

HOME RUN (422 FT)

Wall Clearance: 99.8% • Busch Center Field Wall (400 FT) Cleared

TWIB Legendary Debut Comparison Index Top 0.8% Historical Rookie Debuts

Rank	Player	Date / Team	Debut Highlights	Max EV / Dist	OPS Match
★	Joshua Báez	2026-08-21 (STL)	3-for-4, HR, 2B, 1B, 8 TB, 422 FT HR	108.7 MPH / 422 FT	2.000 (99.2%ile)
1	Trevor Story	2016-04-04 (COL)	2 Home Runs, 4 RBIs, 107.5 MPH Peak Exit Velo	107.5 MPH / 418 FT	2.250 (Primary Match)
2	Starlin Castro	2010-05-07 (CHC)	6 RBIs, 3-run HR in first MLB at-bat, 3B	103.2 MPH / 395 FT	1.750
3	J.P. Arencibia	2010-08-07 (TOR)	2 HRs, 4-for-5 debut, 11 total bases	106.8 MPH / 420 FT	2.600
4	Stephen Strasburg	2010-06-08 (WSH)	14 Strikeouts, 0 Walks, 7.0 IP, 2 ER, 100 MPH	Pitching Masterclass	0.000 (Pitcher)