Adrian Houser

ActiveIL

San Francisco Giants · Pitcher

Age 336' 4" · 227 lbsThrows Right

FBaseball Overview

At 33 years old, Houser operates as a mid-rotation starter for the Giants, offering modest upside in strikeouts while presenting significant ERA and WHIP concerns in 2026. His velocity and control have deteriorated noticeably compared to his 2025 season, when he posted a respectable 3.31 ERA with 92 strikeouts across 125 innings—a stark contrast to his current 5.53 ERA and bloated 1.52 WHIP through 68 innings. Fantasy managers should view him as a streaming option or late-rotation depth piece rather than a reliable weekly starter, as the decline in performance raises questions about his durability and effectiveness moving forward. With limited win potential and no save opportunities, Houser's fantasy value rests primarily on strikeout production, though the K-rate has already taken a hit in 2026.

News Updates

Adrian Houser earns win in bulk relief role for Giants
Adrian Houser earned the victory for San Francisco in Friday's win over Detroit, pitching five innings of relief and allowing one run on six hits with four strikeouts. His extended appearance from the bullpen shows he's being used as a key multi-inning arm.
Aug 8, 2026

MLB Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2015	Milwaukee Brewers	2	0	0	0	0	0.00	1.50	0	2.0	2
2018	Milwaukee Brewers	7	0	0	0	0	3.29	1.46	8	13.2	7
2019	Milwaukee Brewers	35	18	6	7	0	3.72	1.24	117	111.1	37
2020	Milwaukee Brewers	12	11	1	6	0	5.30	1.50	44	56.0	21
2021	Milwaukee Brewers	28	26	10	6	0	3.22	1.28	105	142.1	64
2022	Milwaukee Brewers	22	21	6	10	0	4.73	1.46	69	102.2	47
2023	Milwaukee Brewers	23	21	8	5	0	4.12	1.39	96	111.1	34
2024	New York Mets	23	7	1	5	1	5.84	1.53	45	69.1	32
2025	2 teams▼	21	21	8	5	0	3.31	1.28	92	125.0	38
2026	San Francisco Giants	26	16	4	7	0	4.02	1.30	75	109.2	34
Career	Totals	199	141	44	51	1	4.06	1.35	651	843.1	316

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

Minor League Pitching

Year	Team	G	GS	W	L	ERA	WHIP	K	IP	BB
2011	2 teams▼	12	11	2	4	4.31	1.54	44	48.0	25
2012	Greeneville Astros	11	11	3	4	4.19	1.31	54	58.0	23
2013	Tri-City ValleyCats	14	9	0	4	3.42	1.34	39	50.0	10
2014	Quad Cities River Bandits	25	17	5	6	4.14	1.25	93	108.2	37
2015	3 teams▼	14	12	5	3	4.48	1.32	55	70.1	21
2016	Biloxi Shuckers	13	13	3	7	5.25	1.39	56	70.1	22
2017	2 teams▼	9	8	1	1	1.02	0.74	27	17.2	4
2018	2 teams▼	21	21	2	4	5.03	1.54	67	78.2	25
2019	San Antonio Missions	4	4	2	0	1.27	0.80	23	21.1	4
2022	Nashville Sounds	3	3	0	1	3.24	1.56	10	8.1	7
2023	Nashville Sounds	4	4	0	1	3.07	1.50	12	14.2	5
2024	2 teams▼	7	7	0	4	6.37	1.44	25	35.1	12
2025	Round Rock Express	9	8	2	2	5.03	1.14	37	39.1	15
Career	Totals	158	136	27	43	4.34	1.33	597	670.1	230

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

Game Log2026 MLB

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Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

FB Velo95.2 mph

Avg Spin2118 rpm

Whiff %18.1%

K %16.0%

BB %7.2%

Hard Hit %42.1%

Barrel %8.7%

xERA4.92

xBA Against0.268

xSLG Against0.453

BA Against0.257

SLG Against0.434

GB%44.8%

FB%24.4%

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

2015

Milwaukee Brewers

0.00

1.50

2.0

2018

Milwaukee Brewers

3.29

1.46

13.2

2019

Milwaukee Brewers

3.72

1.24

117

111.1

2020

Milwaukee Brewers

5.30

1.50

56.0

2021

Milwaukee Brewers

3.22

1.28

105

142.1

2022

Milwaukee Brewers

4.73

1.46

102.2

2023

Milwaukee Brewers

4.12

1.39

111.1

2024

New York Mets

5.84

1.53

69.1

2025

2 teams▼

3.31

1.28

125.0

2026

San Francisco Giants

4.02

1.30

109.2

Career

Totals

199

141

4.06

1.35

651

843.1

316

Year

Team

ERA

WHIP

2011

2 teams▼

4.31

1.54

48.0

2012

Greeneville Astros

4.19

1.31

58.0

2013

Tri-City ValleyCats

3.42

1.34

50.0

2014

Quad Cities River Bandits

4.14

1.25

108.2

2015

3 teams▼

4.48

1.32

70.1

2016

Biloxi Shuckers

5.25

1.39

70.1

2017

2 teams▼

1.02

0.74

17.2

2018

2 teams▼

5.03

1.54

78.2

2019

San Antonio Missions

1.27

0.80

21.1

2022

Nashville Sounds

3.24

1.56

8.1

2023

Nashville Sounds

3.07

1.50

14.2

2024

2 teams▼

6.37

1.44

35.1

2025

Round Rock Express

5.03

1.14

39.1

Career

Totals

158

136

4.34

1.33

597

670.1

230