Juan Morillo

Active

Arizona Diamondbacks · Pitcher

Age 276' 1" · 150 lbsThrows Right

FBaseball Overview

This 27-year-old right-hander enters 2026 with modest early-season results that hint at improvement but remain inconsistent for fantasy purposes. Morillo's 2.87 ERA and 1.12 WHIP through spring innings suggest better command and efficiency than his 2025 debut campaign, which featured a bloated 1.69 WHIP and 4.19 ERA, though his strikeout rate has remained steady around 11.8 K/9. As Arizona continues to define his role—he's notched one save in each season—he profiles as a back-end rotation contributor or speculative closer candidate whose upside depends on whether last year's struggles reflected adjustment to MLB or a concerning trend. Managers should monitor his workload and ERA stabilization before committing resources, as he offers upside in strikeouts but presents real risk in wins and ERA categories given his early inconsistency.

MLB Pitching

Year	Team	G	W	L	SV	ERA	WHIP	K	IP	BB
2025	Arizona Diamondbacks	42	0	3	1	4.19	1.69	36	34.1	20
2026	Arizona Diamondbacks	38	2	4	1	2.62	1.05	43	34.1	13
Career	Totals	80	2	7	2	3.41	1.37	79	68.2	33

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
2016	2 teams▼	13	8	2	3	0	3.79	1.44	18	40.1	25
2017	DSL Dodgers 1	14	12	2	3	1	3.42	1.14	50	47.1	19
2018	AZL Dodgers	6	3	0	0	1	3.22	1.12	28	22.1	13
2019	AZL Dodgers Lasorda	13	1	2	1	0	2.56	1.14	58	45.2	13
2021	Great Lakes Loons	1	1	0	0	0	0.00	1.20	4	1.2	0
2023	2 teams▼	35	2	0	2	4	4.86	1.62	48	33.1	23
2024	Tulsa Drillers	41	0	5	2	1	4.76	1.45	50	51.0	29
2025	Reno Aces	21	0	1	1	2	2.57	1.29	20	21.0	9
Career	Totals	144	27	12	12	9	3.67	1.32	276	262.2	131

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

Game Log2026 season

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Pitching Analytics2026 season · via Baseball Savant

Click for year to year changes

FB Velo98.6 mph

Avg Spin2307 rpm

Whiff %33.0%

K %30.5%

BB %9.2%

Hard Hit %34.6%

Barrel %4.9%

xERA2.39

xBA Against0.178

xSLG Against0.271

BA Against0.187

SLG Against0.276

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.

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Year

Team

ERA

WHIP

2025

Arizona Diamondbacks

4.19

1.69

34.1

2026

Arizona Diamondbacks

2.62

1.05

34.1

Career

Totals

3.41

1.37

68.2

Year

Team

ERA

WHIP

2016

2 teams▼

3.79

1.44

40.1

2017

DSL Dodgers 1

3.42

1.14

47.1

2018

AZL Dodgers

3.22

1.12

22.1

2019

AZL Dodgers Lasorda

2.56

1.14

45.2

2021

Great Lakes Loons

0.00

1.20

1.2

2023

2 teams▼

4.86

1.62

33.1

2024

Tulsa Drillers

4.76

1.45

51.0

2025

Reno Aces

2.57

1.29

21.0

Career

Totals

144

3.67

1.32

276

262.2

131