Jack Kochanowicz

Active

Los Angeles Angels · SP

Age 256' 7" · 228 lbsThrows Right

FBaseball Overview

This 25-year-old Angels pitcher continues to struggle with consistency in his second full season, posting a 2-5 record with a 6.19 ERA and 1.58 WHIP through 64 innings in 2026. While Kochanowicz has shown modest strikeout production with 47 K's this season, he offers little value in wins or ERA-dependent categories given his elevated walk and hit rates. His performance hasn't improved from a difficult 2025 campaign, raising concerns about his role stability and whether he can develop into a reliable fantasy option moving forward. Fantasy managers should approach him cautiously as a deep-league flier only, banking on potential mechanical adjustments or increased velocity to reverse his alarming ERA trends.

MLB Pitching

Year	Team	G	GS	W	L	ERA	WHIP	K	IP	BB
2024	Los Angeles Angels	11	11	2	6	3.99	1.19	25	65.1	10
2025	Los Angeles Angels	23	23	3	11	6.81	1.75	72	111.0	58
2026	Los Angeles Angels	13	13	2	5	6.19	1.58	47	64.0	36
Career	Totals	47	47	7	22	5.88	1.55	144	240.1	104

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
2021	Inland Empire 66ers	20	18	4	2	6.91	1.64	73	83.1	35
2022	Inland Empire 66ers	17	9	4	4	4.99	1.30	53	57.2	18
2023	2 teams▼	21	21	5	5	5.27	1.36	69	94	25
2024	Rocket City Trash Pandas	18	18	5	8	4.50	1.27	86	102.0	27
2025	Salt Lake Bees	4	4	0	2	5.95	1.73	16	19.2	16
Career	Totals	80	70	18	21	5.43	1.41	297	356.2	121

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	7	28.3	0-5	0	9.93	2.03	23	18

30 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
13	13	64.0	2-5	0	6.19	1.58	47	36

Game Log2026 MLB

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Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

FB Velo95.9 mph

Avg Spin2289 rpm

Whiff %23.6%

K %15.9%

BB %12.2%

Hard Hit %43.6%

Barrel %7.4%

xERA5.62

xBA Against0.272

xSLG Against0.439

BA Against0.259

SLG Against0.382

GB%57.2%

FB%19.7%

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

Los Angeles Angels

3.99

1.19

65.1

2025

Los Angeles Angels

6.81

1.75

111.0

2026

Los Angeles Angels

6.19

1.58

64.0

Career

Totals

5.88

1.55

144

240.1

104

Year

Team

ERA

WHIP

2021

Inland Empire 66ers

6.91

1.64

83.1

2022

Inland Empire 66ers

4.99

1.30

57.2

2023

2 teams▼

5.27

1.36

2024

Rocket City Trash Pandas

4.50

1.27

102.0

2025

Salt Lake Bees

5.95

1.73

19.2

Career

Totals

5.43

1.41

297

356.2

121

W-L

ERA

WHIP

28.3

0-5

9.93

2.03

W-L

ERA

WHIP

64.0

2-5

6.19

1.58