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Janson Junk

Miami Marlins · RP Throws: R Bats: R Height: 6'2 Weight: 197 Born: Jan 15, 1996 ()

Percentile Ranks
vs LHH
vs RHH K%
9.1
32.4 xWOBA
0.355 · 31%
0.310 · 66%
xSLG
25.3
42.1

Year	Team	G	GS	W-L	IP	ERA	WHIP	K%	CSW%	BB%	xAVG	xSLG	xwOBA	xISO	BAR%	SS%	HH%	GB%	LD%	FB%	Z%	Z Sw%	OZ%	OZ Sw%	May	Jun	Jul	Aug	Sep
2025		21	16	6-4	110.0	4.17	1.14	17.2%	0.0%	2.9%	.287	.462	.334	.175	8.5%	35.1%	47%	41%	27%	25%	55%	15%	45%	29%	15.1	10.5	15.2	8.8	11.0
2024		6	0	0-0	8.0	14.63	3.25	16.7%	0.0%	8.3%	.348	.590	.418	.242	11.1%	41.7%	50%	36%	28%	31%	49%	6%	51%	37%	0.0	0.0	0.0	0.0	0.0
2023		2	1	0-1	7.1	4.91	1.41	15.2%	0.0%	6.1%	.270	.375	.303	.105	8.0%	28.0%	36%	60%	16%	12%	52%	7%	48%	13%	0.0	0.0	0.0	0.0	0.0
2022		3	2	1-1	8.1	6.48	1.60	29.7%	0.0%	8.1%	.221	.349	.282	.128	4.3%	34.8%	35%	65%	17%	17%	52%	13%	48%	30%	0.0	0.0	0.0	0.0	0.0
2021	Angels	4	4	0-1	16.1	3.86	1.37	14.1%	0.0%	2.8%	.296	.571	.375	.275	11.9%	40.7%	34%	39%	20%	34%	51%	8%	49%	39%	0.0	0.0	0.0	0.0	0.0

2025

Box Score														Pitch Usage/Velo											DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	ST		FF		CH		SL		CU		SI	Rating	DK $	DK	FD $	FD
1	2025	Sep, 25	@PHI	4.2	19	61	5	0	1	0	4	3	19.7												59.10	n/a	13.50	n/a	23
2	2025	Sep, 19	@TEX	7.0	24	91	3	0	1	0	5	8	28.6												53.90	n/a	21.95	n/a	37
3	2025	Sep, 13	DET	6.0	26	88	7	1	3	1	4	8	26.1												61.10	n/a	10.70	n/a	25
4	2025	Sep, 08	WSH	4.1	23	86	8	1	6	2	3	6	15.1												55.70	n/a	-2.25	n/a	4
5	2025	Aug, 23	TOR	5.2	23	92	6	0	3	1	3	8	29.3												40.60	n/a	8.55	n/a	17
6	2025	Aug, 17	@BOS	7.0	28	87	6	1	3	1	6	8	26.4												53.40	6,900	17.55	7,100	34
7	2025	Aug, 12	@CLE	5.0	21	86	6	2	3	0	2	7	27.9	8.1%	-1.2	38.4%	-2.1	14.0%	-1.4	33.7%	1.3	5.8%	0.9		52.80	n/a	5.65	n/a	12
8	2025	Aug, 06	HOU	5.0	20	78	5	1	3	2	2	4	24.4	24.4%	0.3	26.9%	-4.5	11.5%	4.3	28.2%	0.8	9.0%	-9.4		55.70	n/a	9.05	n/a	18
9	2025	Aug, 01	NYY	5.0	22	95	6	1	6	1	4	6	24.2	22.1%	-2.8	36.8%	3.0	10.5%	2.2	22.1%	-4.8	8.4%	-29.1		59.40	n/a	3.05	n/a	9
10	2025	Jul, 26	@MIL	5.0	21	86	8	0	3	0	5	13	27.9	27.9%	82.9	38.4%	94.9	14.0%	89.0	7.0%	88.0	12.8%	83.8		60.20	6,800	14.45	7,900	27
11	2025	Jul, 20	KC	5.0	23	69	6	0	5	1	1	3	18.8	18.8%	82.0	40.6%	92.1			31.9%	86.1	7.2%	80.8		55.30	6,100	-0.95	8,600	3
12	2025	Jul, 12	@BAL	7.0	26	85	5	0	0	0	2	5	22.4	15.3%	82.7	44.7%	94.1	7.1%	88.7	20.0%	87.6	12.9%	81.9		59.50	6,400	20.75	7,900	37
13	2025	Jul, 07	@CIN	6.0	20	82	1	0	0	2	3	4	20.7	14.6%	81.6	40.2%	92.6	4.9%	87.8	32.9%	85.8	7.3%	80.9		62.60	n/a	21.70	n/a	37
14	2025	Jul, 02	MIN	6.0	23	83	6	0	2	0	7	9	27.7	12.0%	82.0	38.6%	93.7	4.8%	87.0	25.3%	87.1	19.3%	82.6		42.30	n/a	19.90	n/a	37
15	2025	Jun, 26	@SF	3.2	19	73	8	1	5	0	1	4	24.7												44.20	n/a	-4.55	n/a	-1
16	2025	Jun, 20	ATL	5.0	20	79	5	0	1	0	5	7	22.8												44.80	n/a	20.25	n/a	33
17	2025	Jun, 14	@WSH	5.2	18	64	2	0	0	0	4	3	20.3	9.4%	83.1	42.2%	94.1	6.3%	88.5	28.1%	88.3	14.1%	83.8			n/a	23.55	n/a	35
18	2025	Jun, 09	@PIT	4.0	22	64	9	0	5	1	1	8	21.9	15.6%	83.3	31.3%	95.6	10.9%	90.0	21.9%	88.3	18.8%	83.5			n/a	-5.00	n/a	0
19	2025	Jun, 04	COL	4.0	13	50	1	0	1	0	6	9	32.0	22.0%	82.9	42.0%	94.4	2.0%	88.6	24.0%	87.5	10.0%	83.2			n/a	18.40	n/a	27
20	2025	May, 30	SF	4.0	15	55	3	0	0	0	5	9	29.1	12.7%	83.8	47.3%	94.3	7.3%	88.5	27.3%	88.2	5.5%	83.5			n/a	17.20	n/a	27

2024

Box Score														Pitch Usage/Velo												DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	ST		FF		CH		SL		CU		SI		Rating	DK $	DK	FD $	FD

2023

Box Score														Pitch Usage/Velo												DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	ST		FF		CH		SL		CU		SI		Rating	DK $	DK	FD $	FD

2022

Box Score														Pitch Usage/Velo												DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	ST		FF		CH		SL		CU		SI		Rating	DK $	DK	FD $	FD

2021

Box Score														Pitch Usage/Velo												DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	ST		FF		CH		SL		CU		SI		Rating	DK $	DK	FD $	FD

2025 Splits				vs LHB									vs RHB
Pitch	Type	MPH	SPIN	Whiff%	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR
4-Seamer	Fastball	MPH		0%	46%	.282	.341	18.6	7.0	.474	.205	2	39%	.290	.338	16.2	1.5	.468	.156	1
Slider	Breaking	87.0 MPH	2358	23%	33%	.330	.397	8.2	4.9	.542	.164	2	29%	.300	.351	25.8	3.2	.507	.119	1
Sweeper	Breaking	MPH		19%	4%	.262	.242	50.0	0.0	.290	.000	0	30%	.210	.226	16.7	0.0	.311	.019	0
Changeup	Offspeed	88.1 MPH	1469	12%	17%	.287	.325	11.1	0.0	.477	.185	1	2%	.000	.000	0.0	0.0	.000	.000	0

2024 Splits				vs LHB									vs RHB
Pitch	Type	MPH	SPIN	Whiff%	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR
4-Seamer	Fastball	MPH		0%	64%	.409	.506	11.1	33.3	.546	.500	1	58%	.266	.399	33.3	8.3	.714	.400	1
Slider	Breaking	88.2 MPH	2352	24%	31%	.383	.359	0.0	0.0	.428	.000	0	31%	.226	.213	50.0	0.0	.265	.167	0
Sweeper	Breaking	MPH		0%	5%	.281	.270	0.0	0.0	.342	.500	0	11%	.001	.000	0.0	0.0	.001	.000	0

2023 Splits				vs LHB									vs RHB
Pitch	Type	MPH	SPIN	Whiff%	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR	Usage	xBAVG	xWOBA	K%	BB%	xSLG	ISO	HR
4-Seamer	Fastball	92.5 MPH	2265	14%	55%	.231	.264	18.2	9.1	.278	.100	0	35%	.333	.415	33.3	0.0	.667	.500	0
Sinker	Fastball	92.1 MPH	2107	0%	23%	.000	.630	0.0	0.0	.503	.488	0
Curveball	Breaking	82.2 MPH	2451	10%	12%	.400	.353	40.0	0.0	.400	.667	0	15%	.000	.091	0.0	0.0	.072	.069	0
Slider	Breaking	MPH		0%	1%	.000	.000	0.0	0.0	.000	.000	0	4%	.000	.000	0.0	0.0	.000	.000	0
Sweeper	Breaking	MPH		0%	17%	.000	.232	0.0	1.0	.000	.000	0	23%	.000	.558	0.0	0.0	.201	.311	1
Splitter	Offspeed	MPH		0%	15%	.000	.571	0.0	0.0	.259	.345	0

Splits	vs LHB								vs RHB
Year	PA	xBAVG	xWOBA	xSLG	ISO	K%	BB%	HR	PA	xBAVG	xWOBA	xSLG	ISO	K%	BB%	HR
2025	235	.301	.355	.487	.165	15.3%	4.3%	6	212	.273	.310	.435	.094	19.3%	1.4%	2
2024	20	.434	.531	.733	.412	5.0%	15.0%	2	28	.292	.338	.497	.231	25.0%	3.6%	1
2023	23	.259	.299	.340	.100	17.4%	8.7%	0	10	.291	.313	.444	.400	10.0%	0.0%	1
2022	17	.267	.341	.478	.188	23.5%	5.9%	1	20	.179	.231	.234	.111	35.0%	10.0%	0

	Home								Road
Season	PA	xAVG	xWOBA	K%	BB%	xSLG	ISO	HR	PA	xAVG	xWOBA	K%	BB%	xSLG	ISO	HR
2025	48	.275	.305	40.0%	8.0%	.409	.318	0	52	.259	.285	37.0%	5.0%	.386	.289	1
2024	38	.372	.443	15.8%	7.9%	.641	.382	3	10	.258	.324	20.0%	10.0%	.400	.000	0
2023	9	.201	.195	33.3%	0.0%	.247	.000	0	24	.297	.344	8.3%	8.3%	.427	.286	1
2022	17	.315	.411	17.6%	11.8%	.551	.333	1	20	.146	.172	40.0%	5.0%	.189	.000	0

Split	Games	Wind 0-9 mph+	Wind 10+ mph	Humid 0-25	Humid 25-50	Humid 50-75	Humid 75-100	Temp 0-40	Temp 40-60	Temp 61-79	Temp 80+
Road	11.93	12.45	10.81	0.00	12.72	6.18	13.90	0.00	4.10	10.02	19.15
Home	2.82	-6.77	13.77	0.00	5.42	0.00	-2.56	0.00	0.00	2.18	3.05