Pro Baseball Terminal — MLB projections, standings & analytics

Justin Slaten

P · BOS

28 yrs

Pitcher

Description

Position: P
Team: BOS
Type: Pitcher
Bats: Right
Throws: Right
Born: 1997-09-15
Age: 28
Country: USA
Height: 6'4"
Weight: 222 lb
Last active: 2026

Career Résumé

3 seasons

Seasons	3 2024–2026
Games	97
W-L	8-9
ERA	3.81
WHIP	1.12
IP	104
SO	102
SV	5

Pitching Projections

2026 · per ~700 BF

Stat	Proj	Range (p10–p90)	vs LY
SO	153	129–209	-5
BB	46	36–62	-1
HR	18	9–34	+1
Hits	154	127–180	+6
ER	69	51–98	-3

Pitching

Regular season

Season	Tm	W	L	ERA	WHIP	G	SV	IP	SO	BB	HR	ER	xERA	Brl%
2026	BOS	0	3	6.14	1.57	17	0	14.2	19	5	4	10	3.67	7.8%
2025	BOS	2	4	4.24	1.09	36	3	34.0	25	10	3	16	3.51	7.8%
2024	BOS	6	2	2.93	1.01	44	2	55.1	58	9	4	18	3.25	3.9%

Season	Pos	G	Inn	PO	A	FLD%	RF/9	OAA
2026	P	15	13.1	2	1	1.000	2.03	—
2025	P	36	34.0	3	1	1.000	1.06	—
2024	P	44	55.1	2	2	1.000	0.65	—

Date		Opp	Res
2026-06-28	vs	NYY	W
2026-06-27	vs	NYY	W
2026-06-24	@	COL	L
2026-06-19	@	SEA	W
2026-06-18	vs	TOR	L

Date		Opp	Res	Dec	IP	H	R	ER	HR	BB	SO	Pit
2026-06-28	vs	NYY	W	W	1.0	1	2	0	0	0	1	16
2026-06-27	vs	NYY	W	H	0.2	0	0	0	0	0	2	12
2026-06-24	@	COL	L	L	1.0	4	2	2	0	0	1	19
2026-06-23	@	COL	W	ND	1.0	1	0	0	0	0	0	7
2026-06-19	@	SEA	W	H	0.1	0	0	0	0	0	1	6
2026-06-18	vs	TOR	L	ND	1.0	2	0	0	0	0	1	15
2026-06-13	vs	TEX	W	ND	1.0	1	0	0	0	0	1	16
2026-06-10	@	TB	L	ND	0.2	3	2	2	1	0	0	19
2026-06-07	@	NYY	L	L	0.2	3	4	4	1	1	2	25
2026-06-05	@	NYY	W	H	1.0	0	0	0	0	0	0	4
2026-05-30	@	CLE	W	H	1.1	1	0	0	0	1	2	21
2026-05-22	vs	MIN	L	L	0.2	4	4	4	2	1	1	28
2026-05-19	@	KC	W	H	1.0	0	0	0	0	0	2	12
2026-05-18	@	KC	W	H	1.0	0	0	0	0	0	2	17
2026-05-14	vs	PHI	L	ND	0.2	1	0	0	0	0	1	8
2026-05-13	vs	PHI	W	H	1.0	1	0	0	0	0	0	14
2026-05-10	vs	TB	L	ND	1.0	0	0	0	0	0	1	15
2026-04-04	vs	SD	L	ND	1.0	1	0	0	0	0	1	19
2026-04-03	vs	SD	W	H	1.0	0	0	0	0	0	1	9
2026-03-28	@	CIN	L	L	0.1	1	1	0	0	1	1	11
2026-03-26	@	CIN	W	H	1.0	0	0	0	0	1	2	17

Pitching Profile2025 · vs 402

K/9

6.613

BB/9

2.672

HR/9

0.872

ERA

4.2435

WHIP

1.0979

xERA

3.5172

Brl%A

7.8%60

PlayerMedian (50th)percentile vs league

Career Highs

Stat	Best	Year
Wins	6	2024
SO	58	2024
SV	3	2025
ERA	2.93	2024
WHIP	1.01	2024

Comparable Players

2025 · stat-profile similarity

Tristan BeckSF30y
4.61 ERA · 41 K · 1.11 WHIP
91%
vs
Jalen BeeksAZ32y
3.77 ERA · 47 K · 1.08 WHIP
90%
vs
Joey LucchesiSF33y
3.76 ERA · 31 K · 1.23 WHIP
89%
vs
Cole SandsMIN28y
4.50 ERA · 64 K · 1.17 WHIP
88%
vs
Hoby MilnerTEX35y
3.84 ERA · 58 K · 1.27 WHIP
87%
vs

Career Arc

ERA by season · taller = better

Year over Year

pitching trajectory

Yr	Tm	W	ERA	WHIP	SO	IP
24	BOS	6	2.93	1.01	58	55
25	BOS	2▼	4.24▲	1.09▲	25▼	34▼
26	BOS	0▼	6.14▲	1.57▲	19▼	15▼

Career Milestones

chase to the next mark

Wins8

42 to 50

Strikeouts102

898 to 1,000

Saves5

95 to 100

Season

Pitch Arsenal

2025 · Statcast

Pitch	Use	Velo	Spin
4-Seam	36%	96.7	2453
Cutter	33%	92.6	2598
Curve	18%	84.9	2746
Sweeper	12%	85.1	2627

Plate Discipline

2025 · induced

30.4%

Chase

lg 28.5%

73.7%

Z-Swing

lg 67%

26.1%

Whiff

lg 24.5%

73.9%

Contact

lg 76%

53.8%

Zone

lg 48.5%

26.2%

CSW

lg 28%

545 pitches · green/red vs league avg

Statcast Trend

xERA by season · taller = better

Barrel% Against by season · taller = better

Per game	2.4
Ceiling (90th)	6.3
Floor (10th)	-4.3
Std dev	3.9
Boom rate	48%
Bust rate	19%
Profile	Volatile