Athletics#22 · SP/RP

Mason Barnett

Age 25

Contract Value $308,654/yr

Size 6' 0" · 218

Throws RHP

Bats Right

From Kennesaw, GA

1–4

W-L

7.08

ERA

1.62

WHIP

40.2

P-Score

P-Score not yet available

Stats updated Sep 7, 11:39 AM ETLast game Aug 17 at KC

Next start

No probable start has been announced.

Season overview

ERA

7.08

WHIP

1.62

K/9

8.4

BB/9

5.3

FIP

6.98

HR/9

2.7

IP/start

10.2

WAR

-0.7

How good is he?

StatPlayerMLB AvgPercentile

Results1350

POOR

Strikeouts & Control4250

BELOW AVG

Run Prevention1150

POOR

Consistency3750

WEAK

Form2150

POOR

Recent form

Last 4 starts

ERA

10.697.08

▲ 3.61

K/9

8.48.4

▼ 0.0

BB/9

6.25.3

▲ 0.9

IP/start

4.010.2

▼ 6.2

Pitches/start

7676

— 0

·ERA rose by 3.61 over the last 4 starts.

·Walk rate rose from 5.3 to 6.2 BB/9.

·Innings per start fell from 10.2 to 4.0.

Pitch arsenal (2026)

Usage %Velocity

Four-seam FB48.7%95.0 mph
Slider19.5%87.3 mph
Sweeper14.8%83.5 mph
Curveball10.0%79.2 mph
Changeup7.0%85.4 mph

Hot / cold zones (vs RHB)

.143.462.250.714.154.385.400.292.500

Better than MLB avg
Similar to MLB avg
Worse than MLB avg

Monthly ERA (2026)

Minimum 1 GS

Splits

Home / away

Home (2 GS)

8.00

WHIP 1.44

Away (2 GS)

14.14

WHIP 2.71

6.14 ERA better at home

vs handedness

vs LHH

.889

vs RHH

.924

.035 OPS better vs LHH

By monthERA · IP · K

August13.0911.09

July5.405.06

Career

YearTeamW-LERAIPKWHIPFIPWAR

2026Oakland Athletics1–47.0840.2381.626.98-0.7

Frequently asked

What is Mason Barnett's ERA in 2026?+

7.08 across 4 starts and 40.2 innings, with a 1.62 WHIP and a 6.98 FIP.

When is his next start?+

No probable start has been announced.

What pitches does he throw?+

He throws four-seam fb (48.7% at 95.0 mph mph), slider (19.5% at 87.3 mph mph), sweeper (14.8% at 83.5 mph mph), curveball (10.0% at 79.2 mph mph), changeup (7.0% at 85.4 mph mph).

What is his P-Score?+

P-Score is not yet available for this pitcher.

How has he pitched in his last 4 starts?+

A 10.69 ERA, 8.4 K/9, 6.2 BB/9.