Brandon Eisert

Active

Pittsburgh Pirates · RP/SP

Age 286' 2" · 210 lbsThrows Left

#692 Current

FBaseball Overview

This 28-year-old right-hander operates primarily out of Chicago's bullpen, offering strikeout upside with 28 K through 21.2 innings early in 2026 while chasing a more consistent role in wins or saves. His ERA and WHIP remain elevated at 4.98 and 1.29 respectively, reflecting control issues that have persisted since his 2024 debut, though his strikeout rate (11.6 K/9 through early 2026) demonstrates the raw stuff fantasy managers covet. The key concern is whether he can stabilize his command and secure high-leverage innings, as his 2025 campaign showed promise with 74 strikeouts over 69.2 innings but limited saves opportunities and a bloated WHIP that signals too many baserunners allowed. For fantasy purposes, monitor his role closely—if he earns a setup man or closer opportunity, he becomes a streaming option for strikeouts, but his volatility in ERA and WHIP makes him a risky anchor investment.

MLB Pitching

Year	Team	G	GS	W	L	SV	ERA	WHIP	K	IP	BB
2024	Toronto Blue Jays	3	0	0	0	0	4.05	1.35	2	6.2	4
2025	Chicago White Sox	72	3	3	8	2	4.39	1.44	74	69.2	25
2026	2 teams▼	40	4	3	3	0	5.52	1.30	49	44.0	14
Career	Totals	115	7	6	11	2	4.79	1.38	125	120.1	43

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	3 teams▼	32	0	6	1	1	3.55	1.34	82	63.1	19
2022	Buffalo Bisons	45	5	4	3	0	3.41	1.14	77	60.2	15
2023	Buffalo Bisons	59	1	4	3	2	4.17	1.32	76	69.0	25
2024	Buffalo Bisons	42	4	4	2	3	3.86	1.34	66	53.2	21
2025	Charlotte Knights	2	0	0	0	0	4.50	2.00	3	2.0	1
2026	2 teams▼	23	3	1	2	0	4.00	1.11	30	27.0	7
Career	Totals	203	13	19	11	6	3.79	1.27	334	275.2	88

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	8.2	1-1	0	3.12	0.92	9	2

30 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
30	3	33.1	2-3	0	5.94	1.23	39	9

Game Log2026 MLB

Loading game log…

Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

FB Velo89.9 mph

Avg Spin1998 rpm

Whiff %30.6%

K %25.9%

BB %7.4%

Hard Hit %39.2%

Barrel %6.4%

xERA3.76

xBA Against0.239

xSLG Against0.378

BA Against0.254

SLG Against0.432

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

Toronto Blue Jays

4.05

1.35

6.2

2025

Chicago White Sox

4.39

1.44

69.2

2026

2 teams▼

5.52

1.30

44.0

Career

Totals

115

4.79

1.38

125

120.1

Year

Team

ERA

WHIP

2021

3 teams▼

3.55

1.34

63.1

2022

Buffalo Bisons

3.41

1.14

60.2

2023

Buffalo Bisons

4.17

1.32

69.0

2024

Buffalo Bisons

3.86

1.34

53.2

2025

Charlotte Knights

4.50

2.00

2.0

2026

2 teams▼

4.00

1.11

27.0

Career

Totals

203

3.79

1.27

334

275.2

W-L

ERA

WHIP

8.2

1-1

3.12

0.92

W-L

ERA

WHIP

33.1

2-3

5.94

1.23