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Lucas Giolito

Boston Red Sox · SP Throws: R Bats: R Height: 6'6 Weight: 245 Born: Jul 14, 1994 (31)

Percentile Ranks
vs LHH
vs RHH K%
77.3
29.4 xWOBA
0.369 · 17%
0.363 · 8%
xSLG
10.6
9.8

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		16	16	7-2	87.2	3.80	1.26	21.2%	0.0%	7.1%	.289	.518	.367	.229	10.0%	40.9%	43%	37%	27%	28%	51%	15%	49%	44%	17.3	10.2	17.0	17.6	0.0	0.0
2023		33	33	8-15	184.1	4.88	1.31	25.7%	0.0%	9.2%	.239	.445	.329	.205	11.0%	33.3%	42%	36%	23%	29%	49%	19%	51%	53%	0.0	0.0	0.0	0.0	0.0	0.0
2022		30	30	11-9	161.2	4.90	1.44	25.4%	0.0%	8.7%	.249	.397	.318	.149	7.5%	37.9%	39%	39%	27%	29%	48%	17%	52%	52%	0.0	0.0	0.0	0.0	0.0	0.0
2021	White Sox	31	31	11-9	178.2	3.53	1.09	28.0%	0.0%	7.0%	.221	.362	.280	.141	6.7%	37.4%	34%	34%	28%	27%	51%	24%	49%	53%	0.0	0.0	0.0	0.0	0.0	0.0
2020	White Sox	12	12	4-3	72.1	3.48	1.04	33.7%	0.0%	9.7%	.196	.323	.270	.126	5.6%	33.5%	35%	44%	22%	27%	50%	28%	50%	58%	0.0	0.0	0.0	0.0	0.0	0.0
2019	White Sox	29	29	14-9	176.2	3.41	1.06	32.4%	0.0%	8.0%	.215	.368	.283	.154	9.4%	37.3%	35%	36%	28%	24%	54%	26%	46%	50%	0.0	0.0	0.0	0.0	0.0	0.0
2018	White Sox	32	32	10-13	173.1	6.13	1.48	16.1%	0.0%	11.6%	.256	.433	.348	.177	7.0%	30.5%	37%	45%	22%	25%	49%	15%	51%	38%	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		SL		CU		Rating	DK $	DK	FD $	FD
1	2025	Jul, 29	@MIN	6.0	26	101	5	0	1	2	5	12	23.8									55.70	n/a	21.30	n/a	40
2	2025	Jul, 23	@PHI	4.0	19	57	6	4	5	1	2	9	24.6	42.1%	-2.8	12.3%	-20.8	35.1%	-4.6	10.5%	0.0	61.80	8,000	-1.20	8,700	3
3	2025	Jul, 18	@CHC	5.1	24	98	5	1	4	2	6	12	24.5	44.9%	-3.5	17.3%	3.4	34.7%	2.0	3.1%	-23.8	62.60	n/a	11.80	n/a	22
4	2025	Jul, 09	COL	6.0	20	92	4	0	0	0	6	16	32.6	60.9%	2.3	17.4%	1.8	15.2%	2.2	6.5%	1.5	65.80	n/a	27.10	n/a	46
5	2025	Jul, 04	@WSH	7.2	29	108	4	0	1	3	7	11	29.6	50.0%	2.7	22.2%	3.8	24.1%	1.6	3.7%	2.0	57.30	n/a	29.05	n/a	51
6	2025	Jun, 28	TOR	7.0	29	105	6	0	0	1	5	8	23.8									58.60	n/a	25.55	n/a	46
7	2025	Jun, 22	@SF	6.0	23	83	4	2	2	2	5	7	27.7									54.30	n/a	15.90	n/a	31
8	2025	Jun, 16	@SEA	6.0	21	91	3	0	0	1	10	16	35.2	51.6%	95.3	16.5%	84.3	27.5%	87.9	4.4%	80.5	54.60	7,300	35.10	7,400	58
9	2025	Jun, 10	TB	6.0	23	98	3	0	0	3	4	13	29.6	56.1%	94.9	24.5%	84.0	15.3%	87.3	3.1%	80.9	74.30	n/a	21.90	n/a	40
10	2025	Jun, 04	LAA	1.2	14	43	8	1	7	1	1	1	14.0	34.9%	94.5	23.3%	83.1	41.9%	88.4			62.50	7,800	-13.65	8,000	-13
11	2025	May, 30	@ATL	4.2	21	85	5	0	1	2	3	6	23.5	38.8%	93.4	28.2%	82.3	32.9%	88.1			67.70	n/a	10.30	n/a	20
12	2025	May, 24	BAL	7.0	25	99	6	0	0	2	6	8	24.2	37.4%	94.3	27.3%	83.1	33.3%	88.1	2.0%	78.3	68.30	6,800	22.95	7,700	43
13	2025	May, 17	ATL	4.0	22	87	8	3	6	2	3	6	20.7	37.9%	94.8	20.7%	84.7	35.6%	88.1	5.7%	80.1	90.00	n/a	-3.00	n/a	3
14	2025	May, 11	@KC	6.2	23	88	2	0	0	1	5	9	26.1	47.7%	95.2	19.3%	84.7	21.6%	89.6	10.2%	80.3	62.40	n/a	27.20	n/a	45
15	2025	May, 06	TEX	3.2	20	74	10	0	6	1	2	4	20.3	60.8%	92.5	36.5%	82.2	1.4%	88.3	1.4%	76.0	84.00	n/a	-6.35	n/a	-1
16	2025	Apr, 30	@TOR	6.0	25	90	5	2	3	2	7	7	31.1	56.7%	94.0	35.6%	83.2	5.6%	85.5	2.2%	76.4	55.80	n/a	17.30	n/a	34

2023

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

2022

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

2021

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

2020

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

2019

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

2018

Box Score														Pitch Usage/Velo								DFS
#	Date		Opp	IP	BF	PC	H	HR	ER	BB	SO	SwStr	CSW%	FF		CH		SL		CU		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%	54%	.292	.378	23.3	11.6	.501	.122	1	48%	.305	.367	15.1	6.5	.501	.095	2
Slider	Breaking	MPH		31%	18%	.304	.406	34.4	6.3	.619	.233	2	31%	.318	.359	22.0	1.7	.514	.105	2
Changeup	Offspeed	MPH		25%	28%	.220	.343	20.8	6.3	.540	.295	4	20%	.276	.382	18.8	9.4	.556	.276	2

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

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	MPH		20%	45%	.201	.306	28.6	12.1	.397	.200	7	40%	.310	.417	22.2	9.2	.596	.346	12
Sinker	Fastball	MPH		0%	0%	.000	.000	0.0	0.0	.000	.000	0
Curveball	Breaking	77.9 MPH	2334	20%	3%	.333	.294	33.3	0.0	.333	.500	0	0%	.000	.590	0.0	0.0	.511	.480	0
Slider	Breaking	84.0 MPH	1978	35%	17%	.228	.363	27.5	11.8	.530	.372	3	36%	.235	.275	25.1	4.2	.365	.156	6
Changeup	Offspeed	80.9 MPH	1547	35%	35%	.212	.306	24.2	10.9	.402	.239	7	23%	.213	.303	29.8	7.0	.404	.225	6

Splits	vs LHB								vs RHB
Year	PA	xBAVG	xWOBA	xSLG	ISO	K%	BB%	HR	PA	xBAVG	xWOBA	xSLG	ISO	K%	BB%	HR
2025	177	.275	.369	.527	.189	24.3%	8.5%	7	186	.301	.363	.509	.128	18.3%	5.4%	6
2023	322	.210	.314	.419	.240	26.7%	11.5%	17	467	.259	.338	.463	.245	25.1%	6.9%	24
2022	294	.212	.287	.343	.118	29.6%	9.2%	7	403	.275	.341	.437	.230	22.3%	8.2%	17
2021	345	.214	.271	.333	.141	28.1%	8.1%	9	373	.227	.288	.388	.206	27.9%	5.9%	18

	Home								Road
Season	PA	xAVG	xWOBA	K%	BB%	xSLG	ISO	HR	PA	xAVG	xWOBA	K%	BB%	xSLG	ISO	HR
2025	52	.319	.360	27.0%	10.0%	.475	.366	1	48	.180	.230	37.0%	10.0%	.273	.216	0
2023	354	.228	.301	27.4%	7.9%	.389	.191	15	435	.250	.351	24.4%	9.4%	.492	.286	26
2022	335	.251	.319	25.1%	6.9%	.410	.199	14	362	.246	.318	25.7%	10.2%	.385	.168	10
2021	353	.209	.274	27.8%	7.4%	.357	.219	18	365	.232	.285	28.2%	6.6%	.367	.133	9

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	21.09	21.03	23.08	0.00	22.86	17.38	21.70	0.00	17.30	20.51	31.88
Home	11.51	12.12	8.07	15.85	8.92	5.19	23.30	0.00	15.52	12.27	1.80