Athletics#63 · 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
7.02
ERA
1.66
WHIP
50
K
50.0
IP
6
GS
Stats updated Oct 22, 3:34 AM ETLast game Sep 18 at CLE
Season overview
How good is he?
StatPlayerMLB AvgPercentile
Run Prevention1850POOR
Skill3550WEAK
Workload2350POOR
Consistency1650POOR
Form2350POOR
Contact Management4550BELOW AVG
Recent form
Last 5 startsGame log
Pitch arsenal (2026)
Usage %Velocity
- Four-seam FB49.0%95.0 mph
- Slider18.5%87.4 mph
- Sweeper14.2%83.6 mph
- Curveball10.1%79.1 mph
- Changeup8.2%85.4 mph
Hot / cold zones (vs RHB)
.143.429.250.545.154.385.429.346.526
- Better than MLB avg
- Similar to MLB avg
- Worse than MLB avg
Monthly ERA (2026)
Minimum 1 GSSplits
Home / away
Home (2 GS)
8.00
WHIP 1.44
Away (3 GS)
12.19
WHIP 2.90
4.19 ERA better at home
vs handedness
vs LHH
.915
vs RHH
.925
.010 OPS better vs LHH
By monthERA · IP · K
September8.103.14
August13.0911.09
July5.405.06
Career
Frequently asked
What is Mason Barnett's ERA in 2026?+
7.02 across 6 starts and 50.0 innings, with a 1.66 WHIP and a 6.78 FIP. That ERA ranks 223rd among qualified starters.
When is his next start?+
No probable start has been announced.
What pitches does he throw?+
He throws four-seam fb (49.0% at 95.0 mph mph), slider (18.5% at 87.4 mph mph), sweeper (14.2% at 83.6 mph mph), curveball (10.1% at 79.1 mph mph), changeup (8.2% at 85.4 mph mph).
What is his P-Score?+
26 out of 100, which we label poor — 221st among 226 qualified starters.
How has he pitched in his last 5 starts?+
A 10.24 ERA, 8.8 K/9, 7.0 BB/9.