Miami Marlins#26 · SP
Janson Junk
Age 30
Contract Value $798,000/yr
Size 6' 2" · 197
Throws RHP
Bats Right
From Federal Way, WA
6–9
W-L
4.22
ERA
1.29
WHIP
89
K
123.2
IP
25
GS
Stats updated Oct 7, 4:32 AM ETLast game Sep 22 at CHC
Season overview
How good is he?
StatPlayerMLB AvgPercentile
Run Prevention5150AVERAGE
Skill4550BELOW AVG
Workload4850BELOW AVG
Consistency3650WEAK
Form4950BELOW AVG
Contact Management5550AVERAGE
Recent form
Last 5 startsGame log
Pitch arsenal (2026)
Usage %Velocity
- Four-seam FB34.6%94.1 mph
- Slider19.5%86.3 mph
- Changeup17.8%87.3 mph
- Sweeper14.4%80.1 mph
- Curveball9.3%80.7 mph
- Sinker4.0%93.6 mph
- Slurve0.5%84.8 mph
Hot / cold zones (vs RHB)
.241.405.176.400.298.297.240.426.222
- Better than MLB avg
- Similar to MLB avg
- Worse than MLB avg
Monthly ERA (2026)
Minimum 1 GSSplits
Home / away
Home (13 GS)
4.45
WHIP 1.20
Away (11 GS)
4.21
WHIP 1.48
0.24 ERA better on the road
vs handedness
vs LHH
.762
vs RHH
.688
.074 OPS better vs RHH
By monthERA · IP · K
September5.6316.014
August2.7023.19
July3.8618.218
May7.0027.022
April2.8328.216
March4.154.15
Rest daysERA · WHIP · K/9
5 days (9 GS)5.731.415.7
6+ days (14 GS)3.491.266.6
Sample sizes below four starts are not shown
Career
Frequently asked
What is Janson Junk's ERA in 2026?+
4.22 across 25 starts and 123.2 innings, with a 1.29 WHIP and a 4.13 FIP. That ERA ranks 121st among qualified starters.
When is his next start?+
No probable start has been announced.
What pitches does he throw?+
He throws four-seam fb (34.6% at 94.1 mph mph), slider (19.5% at 86.3 mph mph), changeup (17.8% at 87.3 mph mph), sweeper (14.4% at 80.1 mph mph), curveball (9.3% at 80.7 mph mph), sinker (4.0% at 93.6 mph mph), slurve (0.5% at 84.8 mph mph).
What is his P-Score?+
47 out of 100, which we label below avg — 127th among 226 qualified starters.
How has he pitched in his last 5 starts?+
A 4.79 ERA, 7.0 K/9, 2.6 BB/9.