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Kyle Harrison

Boston Red Sox · RP Throws: L Bats: R Height: 6'2 Weight: 209 Born: )

Percentile Ranks
vs LHH
vs RHH K%
54.5
81.4 xWOBA
0.317 · 69%
0.318 · 53%
xSLG
20.2
86.9

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%	Apr	May	Jun	Jul	Aug	Sep
2025		11	6	1-1	35.2	4.04	1.39	24.4%	0.0%	9.0%	.249	.411	.318	.162	6.8%	40.8%	43%	40%	29%	26%	52%	20%	48%	40%	0.0	8.6	6.7	0.0	0.0	11.2
2024		24	24	7-7	124.1	4.56	1.35	22.2%	0.0%	7.9%	.257	.436	.338	.180	10.1%	34.2%	44%	41%	23%	30%	51%	18%	49%	40%	0.0	0.0	0.0	0.0	0.0	0.0
2023		7	7	1-1	34.2	4.15	1.17	23.8%	0.0%	7.5%	.238	.442	.327	.204	9.3%	42.3%	38%	28%	27%	36%	51%	19%	49%	35%	0.0	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%	FF		CH		SV		SL		CU		SI		Rating	DK $	DK	FD $	FD
1	2025	Sep, 26	DET	3.0	19	65	7	0	3	3	6	6	21.5													67.80	n/a	6.75	n/a	18
2	2025	Sep, 20	@TB	6.0	24	86	4	0	1	2	5	10	25.6													59.30	n/a	17.90	n/a	34
3	2025	Sep, 10	@ATH	3.0	13	49	3	0	0	0	2	4	34.7														n/a	8.95	n/a	15
4	2025	Jun, 10	@COL	5.0	21	87	4	2	3	2	6	10	28.7	55.2%	95.8	24.1%	87.5	19.5%	83.1							81.60	n/a	13.65	n/a	24
5	2025	Jun, 04	SD	4.1	23	87	9	0	5	1	3	8	21.8	72.4%	95.3	3.4%	87.6	23.0%	84.0							43.20	8,300	-0.25	7,200	7
6	2025	May, 30	@MIA	5.0	18	80	1	0	0	3	5	13	30.0	62.5%	95.4	10.0%	87.5	27.5%	83.0							56.00	n/a	22.85	n/a	36
7	2025	May, 24	@WSH	4.0	17	57	5	1	2	0	4	8	33.3	73.7%	95.4	5.3%	87.1	21.1%	83.3							76.60	6,100	10.00	6,400	18
8	2025	May, 20	KC	1.1	5	16	1	0	1	0	2	4	50.0	50.0%	96.5			50.0%	83.1								n/a	4.40	n/a	7
9	2025	May, 13	ARI	1.0	4	12	1	1	1	0	0	1	8.3	58.3%	95.9			41.7%	84.2								n/a	-0.35	n/a	0
10	2025	May, 09	@MIN	2.0	9	38	0	0	0	3	3	6	26.3	68.4%	96.4	7.9%	89.8	23.7%	83.8								n/a	8.70	n/a	15
11	2025	May, 06	@CHC	1.0	3	11	0	0	0	0	2	2	45.5	81.8%	96.5			18.2%	83.6								n/a	6.25	n/a	9

2024

Box Score														Pitch Usage/Velo												DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	FF		CH		SV		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%	FF		CH		SV		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%	65%	.306	.417	25.0	0.0	.688	.350	2	61%	.161	.239	32.7	12.7	.244	.042	0
Cutter	Fastball	86.8 MPH	2097	0%	2%	.031	.383	0.0	0.0	.082	.000	0
Slurve	Breaking	MPH		28%	35%	.209	.288	20.0	0.0	.481	.333	1	23%	.459	.523	0.0	7.7	.744	.417	1
Changeup	Offspeed	85.8 MPH	1910	29%	14%	.424	.474	14.3	0.0	.687	.143	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%	60%	.212	.293	24.6	5.8	.352	.183	3	57%	.248	.336	24.6	9.9	.443	.173	8
Slider	Breaking	88.2 MPH	2165	50%	0%	.210	.328	25.0	0.0	.244	.333	0
Slurve	Breaking	MPH		28%	33%	.253	.275	32.3	3.2	.346	.100	0	20%	.294	.407	26.0	14.0	.558	.233	3
Changeup	Offspeed	84.8 MPH	1946	22%	7%	.171	.297	25.0	12.5	.196	.000	0	23%	.293	.360	11.0	3.4	.464	.156	4

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	93.5 MPH	2239	25%	56%	.350	.450	0.0	4.0	.600	.316	1	62%	.148	.248	37.5	6.3	.343	.193	3
Sinker	Fastball	MPH		0%	1%	.000	.000	0.0	0.0	.000	.000	0	0%	.000	.000	0.0	0.0	.000	.000	0
Slider	Breaking	87.5 MPH	2108	0%	3%	.000	.819	0.0	0.0	.726	.672	0	1%	.000	.000	0.0	0.0	.000	.000	0
Slurve	Breaking	MPH		24%	31%	.331	.491	8.3	8.3	.753	.600	2	25%	.245	.315	24.0	4.0	.418	.217	1
Changeup	Offspeed	86.6 MPH	1985	19%	9%	.200	.177	20.0	0.0	.200	.250	0	12%	.348	.416	18.8	6.3	.582	.267	1

Splits	vs LHB								vs RHB
Year	PA	xBAVG	xWOBA	xSLG	ISO	K%	BB%	HR	PA	xBAVG	xWOBA	xSLG	ISO	K%	BB%	HR
2025	47	.248	.317	.504	.255	21.3%	0.0%	3	108	.249	.318	.364	.106	25.9%	12.0%	1
2024	108	.222	.288	.340	.146	26.9%	5.6%	3	424	.266	.351	.461	.176	21.0%	8.5%	15
2023	42	.330	.421	.554	.306	4.8%	11.9%	3	105	.203	.289	.399	.211	31.4%	5.7%	5

	Home								Road
Season	PA	xAVG	xWOBA	K%	BB%	xSLG	ISO	HR	PA	xAVG	xWOBA	K%	BB%	xSLG	ISO	HR
2025	51	.282	.338	21.6%	7.8%	.438	.191	1	104	.232	.308	26.0%	8.7%	.397	.138	3
2024	108	.223	.288	26.9%	5.6%	.341	.146	3	264	.247	.345	20.1%	9.5%	.445	.200	12
2023	87	.220	.297	26.4%	8.0%	.353	.130	2	60	.263	.371	20.0%	6.7%	.568	.389	6

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	11.06	12.54	14.55	0.00	14.47	14.13	5.85	0.00	14.35	10.24	15.63
Home	13.19	10.81	19.37	0.00	13.54	19.65	6.75	0.00	10.28	10.23	21.35