Spencer Arrighetti

Active

Houston Astros · Pitcher

Age 266' 2" · 186 lbsThrows Right

FBaseball Overview

At age 26, Arrighetti arrives as a streaky starter coming off an AL Pitcher of the Month award in 2026, signaling he has found his footing in the majors after a rough 2025 campaign. His current season numbers show modest improvement with a 7-4 record and 75 strikeouts across 72 innings, though his 4.00 ERA and 1.29 WHIP suggest he remains a mid-tier fantasy option rather than an ace. The Astros Rookie of the Year will provide value in strikeout leagues and as a spot starter, but the injury-plagued 2025 campaign and inconsistent peripherals create enough volatility that fantasy managers should temper expectations for consistent production. Given his youth and the recent uptick in performance, Arrighetti holds intriguing upside if he continues to refine his command and health permits a full workload in the second half.

MLB Pitching

Year	Team	G	GS	W	L	ERA	WHIP	K	IP	BB
2024	Houston Astros	29	28	7	13	4.53	1.41	171	145.0	65
2025	Houston Astros	7	7	1	5	5.35	1.42	31	35.1	20
2026	Houston Astros	14	14	7	4	3.81	1.23	79	78.0	38
Career	Totals	50	49	15	22	4.42	1.35	281	258.1	123

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	2 teams▼	6	2	3	2	0	2.63	0.88	22	13.2	2
2022	2 teams▼	27	17	7	6	2	4.72	1.46	152	106.2	55
2023	2 teams▼	28	21	9	7	0	4.40	1.25	141	124.2	59
2024	Sugar Land Space Cowboys	2	2	0	0	0	2.16	1.68	10	8.1	7
2025	2 teams▼	3	3	0	2	0	5.73	1.45	11	11	5
2026	Sugar Land Space Cowboys	3	3	0	0	0	1.26	0.77	20	14.1	6
Career	Totals	69	48	19	17	2	4.26	1.31	356	278.2	134

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

Game Log2026 season

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Analytics2026 season · via Baseball Savant

Click for year to year changes

FB Velo92.3 mph

Avg Spin2483 rpm

Whiff %26.7%

K %23.9%

BB %11.5%

Hard Hit %30.2%

Barrel %7.4%

xERA4.71

xBA Against0.236

xSLG Against0.385

BA Against0.208

SLG Against0.341

GB%39.4%

FB%30.0%

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

Houston Astros

4.53

1.41

171

145.0

2025

Houston Astros

5.35

1.42

35.1

2026

Houston Astros

3.81

1.23

78.0

Career

Totals

4.42

1.35

281

258.1

123

Year

Team

ERA

WHIP

2021

2 teams▼

2.63

0.88

13.2

2022

2 teams▼

4.72

1.46

152

106.2

2023

2 teams▼

4.40

1.25

141

124.2

2024

Sugar Land Space Cowboys

2.16

1.68

8.1

2025

2 teams▼

5.73

1.45

2026

Sugar Land Space Cowboys

1.26

0.77

14.1

Career

Totals

4.26

1.31

356

278.2

134