JoJo Romero

Active

Milwaukee Brewers · Pitcher

Age 295' 11" · 215 lbsThrows Left

FBaseball Overview

At 29 years old, this left-handed pitcher operates primarily out of the Cardinals' bullpen, where he's transitioning into a more prominent role after posting an impressive 2.07 ERA with eight saves in 2025. His early 2026 performance shows some regression with a 3.72 ERA across 36.1 innings, though he's maintained solid strikeout production with 35 K in limited action, suggesting the underlying stuff remains effective. The modest 1.21 WHIP indicates good command despite the elevated ERA, offering hope that 2026 could still yield fantasy value through saves opportunities if he reclaims the closer role or remains a high-leverage option. Fantasy managers should monitor his workload and role clarity with St. Louis, as the save potential from 2025 represents his ceiling, while the current ERA decline presents a near-term risk worth watching.

MLB Pitching

Year	Team	G	W	L	SV	ERA	WHIP	K	IP	BB
2020	Philadelphia Phillies	12	0	0	0	7.59	1.41	10	10.2	2
2021	Philadelphia Phillies	11	0	0	0	7.00	1.78	8	9.0	4
2022	2 teams▼	17	0	0	0	4.96	1.41	17	16.1	10
2023	St. Louis Cardinals	27	4	2	3	3.68	1.06	42	36.2	10
2024	St. Louis Cardinals	65	7	3	1	3.36	1.15	51	59.0	16
2025	St. Louis Cardinals	65	4	6	8	2.07	1.25	55	61.0	29
2026	2 teams▼	48	2	3	0	3.50	1.36	45	46.1	18
Career	Totals	245	17	14	12	3.54	1.26	228	239	89

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	Williamsport Crosscutters	10	10	2	2	0	2.56	1.20	31	45.2	11
2017	2 teams▼	23	23	10	3	0	2.16	1.09	128	129	36
2018	Reading Fightin Phils	18	18	7	6	0	3.80	1.29	100	106.2	41
2019	2 teams▼	24	24	7	9	0	5.82	1.55	92	111.1	47
2022	5 teams▼	8	0	0	0	0	0.00	0.57	8	7.0	0
2023	Memphis Redbirds	17	0	2	1	2	3.00	1.33	33	21.0	9
2026	Wisconsin Timber Rattlers	2	1	0	0	0	0.00	0.50	4	2.0	1
Career	Totals	109	79	30	21	4	3.55	1.28	408	430.2	147

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 Velo93.9 mph

Avg Spin2274 rpm

Whiff %22.9%

K %22.3%

BB %8.1%

Hard Hit %42.4%

Barrel %8.3%

xERA4.70

xBA Against0.259

xSLG Against0.430

BA Against0.246

SLG Against0.400

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

2020

Philadelphia Phillies

7.59

1.41

10.2

2021

Philadelphia Phillies

7.00

1.78

9.0

2022

2 teams▼

4.96

1.41

16.1

2023

St. Louis Cardinals

3.68

1.06

36.2

2024

St. Louis Cardinals

3.36

1.15

59.0

2025

St. Louis Cardinals

2.07

1.25

61.0

2026

2 teams▼

3.50

1.36

46.1

Career

Totals

245

3.54

1.26

228

239

Year

Team

ERA

WHIP

2016

Williamsport Crosscutters

2.56

1.20

45.2

2017

2 teams▼

2.16

1.09

128

129

2018

Reading Fightin Phils

3.80

1.29

100

106.2

2019

2 teams▼

5.82

1.55

111.1

2022

5 teams▼

0.00

0.57

7.0

2023

Memphis Redbirds

3.00

1.33

21.0

2026

Wisconsin Timber Rattlers

0.00

0.50

2.0

Career

Totals

109

3.55

1.28

408

430.2

147