Justin Sterner

ActiveIL

Athletics · RP

Age 306' 1" · 215 lbsThrows Right

#433 Preseason

FBaseball Overview

Coming off a solid 2025 campaign where he posted a 3.18 ERA and 1.05 WHIP across 65 innings, this young Athletics right-hander continues to develop as a mid-rotation contributor in 2026. The strikeout production remains reliable at 40 K in limited early-season work, though his ERA has ticked up slightly to 3.96 with modest win totals reflecting Oakland's struggles. Fantasy managers should view him as a depth option for ERA and WHIP rather than a workhorse, as his role remains somewhat uncertain and innings could fluctuate given the Athletics' rebuilding timeline. The upside exists for continued strikeout improvements if he receives consistent run support, but he lacks the workload or save opportunities to provide meaningful contributions in counting stats.

MLB Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2024	Tampa Bay Rays	2	0	0	0	0	2.25	1.50	4	4.0	1
2025	Athletics	59	1	4	3	0	3.18	1.05	70	65.0	21
2026	Athletics	46	0	2	3	1	6.12	1.38	40	42.2	13
Career	Totals	107	1	6	6	1	4.27	1.19	114	111.2	35

Source: MLB Stats API · Multi-team seasons show combined totals — click to expand

Minor League Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2021	4 teams▼	11	0	1	2	0	4.96	1.47	26	16.1	9
2022	2 teams▼	38	0	6	2	4	3.94	1.40	65	48	24
2023	2 teams▼	34	0	6	1	3	5.27	1.39	71	54.2	21
2024	Durham Bulls	34	1	2	4	2	3.28	1.11	60	46.2	17
2025	Las Vegas Aviators	3	0	0	0	0	9.00	2.00	1	3.0	2
Career	Totals	141	1	18	11	15	4.08	1.25	275	209.2	85

Source: MLB Stats API · Multi-team seasons show combined totals — click to expand

Last Week / Last Month

Current season · MLB only

7 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
7	0	4.3	0-0	0	21.60	3.20	2	4

30 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
30	0	24.3	1-0	1	7.20	1.32	20	7

Game Log2026 MLB

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Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

FB Velo93.5 mph

Avg Spin2537 rpm

Whiff %29.9%

K %21.7%

BB %7.1%

Hard Hit %45.4%

Barrel %9.2%

xERA3.57

xBA Against0.224

xSLG Against0.399

BA Against0.274

SLG Against0.524

What These Stats Mean

FB Velo — Average fastball velocity. Harder throwers generate more swings and misses, setting up every other pitch in their arsenal. Velocity is the foundation of strikeout upside.

Avg Spin — Average spin rate across all pitches. Higher spin creates more movement and makes pitches harder to square up — elite spinners run better strikeout and batting average against numbers.

Whiff % — Swings-and-misses per swing. The most direct measure of a pitcher's ability to miss bats and the best leading indicator of strikeout rate.

K % — Strikeout rate per batter faced. The core fantasy pitching stat — high K% means reliable strikeout totals that hold up even in shorter starts.

BB % — Walk rate per batter faced. The primary control metric. High BB% tanks ERA and WHIP and keeps baserunners on constantly. Elite starters typically run below 7%.

Hard Hit % — Percentage of batted balls hit 95 mph or harder against. Low hard-hit% means weak contact, protecting both ERA and the defense behind the pitcher.

Barrel % — Percentage of batted balls barreled against. The most direct home run predictor — low barrel% pitchers rarely give up long balls.

xERA — Expected ERA based on contact quality allowed, removing the effect of sequencing, luck, and defense. Better predictor of future ERA than ERA itself.

xBA Against — Expected batting average opponents should hit based on contact quality. A gap between xBA and actual BA indicates unsustainable luck in either direction.

xSLG Against — Expected slugging allowed based on contact quality. High xSLG against predicts future extra-base damage; low xSLG means the pitcher is genuinely suppressing power.

BA Against — Actual batting average opponents are hitting — a key WHIP component. Check xBA to see if the number is sustainable.

SLG Against — Actual slugging allowed. Captures hits, doubles, triples, and home runs — lower means the pitcher is limiting the power damage he gives up.

GB% — Ground ball rate. High GB% pitchers generate double plays, limit home runs, and keep the ball in the park — great for protecting ERA and WHIP ratios.

FB% — Fly ball rate. High FB% pitchers give up more air contact — dangerous when combined with high exit velocity, less so when contact is soft.

Loading player data...

Year

Team

ERA

WHIP

2024

Tampa Bay Rays

2.25

1.50

4.0

2025

Athletics

3.18

1.05

65.0

2026

Athletics

6.12

1.38

42.2

Career

Totals

107

4.27

1.19

114

111.2

Year

Team

ERA

WHIP

2021

4 teams▼

4.96

1.47

16.1

2022

2 teams▼

3.94

1.40

2023

2 teams▼

5.27

1.39

54.2

2024

Durham Bulls

3.28

1.11

46.2

2025

Las Vegas Aviators

9.00

2.00

3.0

Career

Totals

141

4.08

1.25

275

209.2

W-L

ERA

WHIP

4.3

0-0

21.60

3.20

W-L

ERA

WHIP

24.3

1-0

7.20

1.32