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Ronald Bolaños

Relief Pitcher

Kansas City Royals

Bats / Throws	Right / Right
Date of Birth	8/23/1996 (25)
Height, Weight	6'2", 230 lb
Hometown	Santa Cruz del Norte, CUB

2022 Season Stats

MLB Rank MLB Average

	Sv	IP	ERA	WHIP	K%	BB%	CSW%				FB MPH	SwStr%	HC%	GB%	xERA	xwOBA
	0	18.1	4.42	1.75	13.8%	13.8%	25.0%				93.3	9.6%	29.9%	51.7%	6.40	.397

	134^th 2 Sv	221^st 22 IP	227^th 4.11 ERA	314^th 1.32 WHIP	320^th 23.2% K%	307^th 9.4% BB%	309^th 29.1% CSW%				225^th 93.9 FB MPH	294^th 12.8% SwStr%	278^th 25.1% HC%	94^th 44.9% GB%	331^st 4.08 xERA	332^nd .311 xwOBA

Articles

6/3/2022Starting Pitcher Streamer Rankings - 6/3 & 6/4Nick Pollack

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Projection

No projection available for this season

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Stats Glossary

Overview

Show 2022 MLB Average

Year	Team	G	GS	IP	W	L	ERA	xERA	FIP	xFIP	WHIP	H/9	K%	BB%	BABIP	xBABIP	HC%	GB%	HR/FB%	LOB%	SwStr%	CSW%
2019	SD	5	3	19.2	0	2	5.95	5.70	5.29	5.33	1.47	8.0	21.6%	13.6%	.264	.302	30.7%	42.9%	17.6%	65.9%	9.8%	26.0%
2020	KC	2	2	3.2	0	2	12.27	10.66	13.82	8.26	3.00	22.5	9.5%	14.3%	.462	.422	30.0%	57.1%	50.0%	54.3%	6.8%	19.2%
2021	KC	3	0	6.1	0	0	1.42	1.56	0.88	2.78	0.95	5.9	40.0%	8.0%	.308	.267	8.0%	46.2%	0.0%	83.3%	17.9%	33.0%
2022	KC	8	0	18.1	0	0	4.42	6.40	5.73	5.74	1.75	9.9	13.8%	13.8%	.310	.333	29.9%	51.7%	12.5%	80.7%	9.6%	25.0%
RP MLB AVG		20	0	22.0	1	1	4.11	4.08	4.00	3.98	1.32	8.3	23.4%	9.4%	.288	.277	24.9%	44.8%	12.0%	72.4%	12.7%	29.0%
4 Years		18	5	48.0	0	4	5.25	0.00	0.00	0.00	1.63	9.2	19.5%	13.1%	.307	.323	27.7%	48.3%	16.3%	72.4%	10.5%	25.9%

Repertoire

Four-Seamer | 31%
Slider | 30%
Sinker | 22%
Curveball | 11%
Changeup | 5%
All Pitches

2019 2020 2021 2022 All

Show 2022 MLB Average

Year	MPH	Usage%	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	GB%	FB%	AVG	wOBA	BABIP	HR/FB%	xAVG	xwOBA	HC%	Spin
2019	94.3	54.6%	18.8%	49.2%	5.3%	18.5%	23.8%	61.4%	55.6%	48.7%	30.8%	.256	.372	.243	16.7%	.270	.372	38.5%	2,239
2020	95.2	45.2%	8.3%	63.6%	6.1%	15.2%	21.2%	63.6%	51.5%	71.4%	14.3%	.444	.550	.429	100.0%	.441	.561	50.0%	2,205
2021	95.2	19.8%	36.4%	47.6%	9.5%	14.3%	23.8%	71.4%	66.7%	50.0%	50.0%	.200	.262	.250	0.0%	.061	.160	16.7%	2,196
2022	93.3	31.0%	17.0%	48.5%	5.8%	13.6%	19.4%	57.3%	52.4%	59.1%	22.7%	.217	.323	.227	0.0%	.331	.410	43.3%	2,178
RP MLB AVG	93.9	42.9%	25.9%	49.2%	10.6%	16.4%	27.0%	64.3%	59.1%	37.2%	40.9%	.247	.341	.286	12.5%	.247	.350	29.3%	2,246

Year	xAVG	xwOBA	xBABIP	xwoBACON	HC%	Brl%	ICR%	IPA%	EV	FB EV	LA	xMov	yMov	xRP	yRP	Ext.	Spin
2019	.270	.372	.268	.336	38.5%	5.1%	38.5%	28.8%	89.7	88.2	8.6	0.7	1.2	-2.1	6.1	6.4	2,239
2020	.441	.561	.432	.597	50.0%	14.3%	50.0%	36.4%	96.7	106.6	1.0	5.2	8.3	-1.6	5.9	6.3	2,205
2021	.061	.160	.076	.067	16.7%	0.0%	25.0%	16.7%	88.8	78.9	16.8	5.7	8.6	-1.8	6.0	6.6	2,196
2022	.331	.410	.346	.338	43.3%	4.5%	45.5%	33.3%	94.6	82.7	9.6	4.7	7.1	-1.8	6.0	6.6	2,178
RP MLB AVG	.247	.350	.280	.382	29.3%	9.2%	40.0%	26.4%	90.4	88.8	17.8	4.8	9.2	-0.8	5.6	6.3	2,246

Year	P	TBF	1B	2B	3B	HR	K	BB	HBP	WP	Strikes	Balls	AVG	SLG	wOBA
2019	189	52	5	4	0	2	4	8	1	0	116	73	.256	.488	.372
2020	33	11	3	0	0	1	1	1	1	1	21	12	.444	.778	.550
2021	21	6	1	0	0	0	1	1	0	0	15	6	.200	.200	.262
2022	103	30	4	1	0	0	1	6	1	0	59	44	.217	.261	.323
RP MLB AVG	131	33	4	1	0	1	7	4	0	0	85	46	.247	.420	.341

Year	GB%	LD%	FB%	IFFB%	HR/FB%	Pull%	Cent%	Oppo%	Foul%	Weak%	Top%	Under%	Fl&B%	Solid%	SS%
2019	48.7%	20.5%	30.8%	7.7%	16.7%	43.6%	30.8%	25.6%	16.9%	2.6%	38.5%	20.5%	20.5%	12.8%	30.8%
2020	71.4%	14.3%	14.3%	0.0%	100.0%	25.0%	62.5%	12.5%	18.2%	0.0%	42.9%	0.0%	42.9%	0.0%	28.6%
2021	50.0%	0.0%	50.0%	25.0%	0.0%	50.0%	50.0%	0.0%	28.6%	0.0%	25.0%	50.0%	25.0%	0.0%	0.0%
2022	59.1%	18.2%	22.7%	13.6%	0.0%	36.4%	27.3%	36.4%	16.5%	4.5%	31.8%	18.2%	40.9%	0.0%	22.7%
RP MLB AVG	37.2%	21.9%	40.9%	11.9%	12.5%	31.6%	35.1%	33.4%	20.7%	3.2%	24.9%	31.8%	23.3%	7.7%	36.6%

Year	HC%	Brl%	ICR%	IPA%	AVG	wOBA	BABIP	BACON	xAVG	xwOBA	xBABIP	xwoBACON	EV	FB EV	LA
2019	38.5%	5.1%	38.5%	28.8%	.256	.372	.243	.282	.270	.372	.268	.336	89.7	88.2	8.6
2020	50.0%	14.3%	50.0%	36.4%	.444	.550	.429	.500	.441	.561	.432	.597	96.7	106.6	1.0
2021	16.7%	0.0%	25.0%	16.7%	.200	.262	.250	.250	.061	.160	.076	.067	88.8	78.9	16.8
2022	43.3%	4.5%	45.5%	33.3%	.217	.323	.227	.227	.331	.410	.346	.338	94.6	82.7	9.6
RP MLB AVG	29.3%	9.2%	40.0%	26.4%	.247	.341	.286	.320	.247	.350	.280	.382	90.4	88.8	17.8

Year	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	Whiff%	Swing%	Con%	O-Con%	Z-Con%	ECS%	2-Str O-Sw%	F-Str%	TF-Str%
2019	18.8%	49.2%	5.3%	18.5%	23.8%	61.4%	55.6%	12.3%	42.9%	87.7%	72.2%	92.1%	21.1%	16.7%	54.0%	42.0%
2020	8.3%	63.6%	6.1%	15.2%	21.2%	63.6%	51.5%	12.5%	48.5%	87.5%	100.0%	86.7%	13.0%	20.0%	46.2%	30.8%
2021	36.4%	47.6%	9.5%	14.3%	23.8%	71.4%	66.7%	16.7%	57.1%	83.3%	75.0%	87.5%	0.0%	14.3%	33.3%	33.3%
2022	17.0%	48.5%	5.8%	13.6%	19.4%	57.3%	52.4%	13.3%	43.7%	86.7%	55.6%	94.4%	17.5%	12.5%	45.8%	37.5%
RP MLB AVG	25.9%	49.2%	10.6%	16.4%	27.0%	64.3%	59.1%	22.0%	47.9%	78.0%	68.6%	81.6%	21.1%	21.5%	61.3%	50.7%

Year	aLoc%	x-mLoc%	gLoc%	hiLoc%	y-mLoc%	loLoc%	heLoc%	iLoc%	oLoc%	Early%	Behind%	2-Str%	Zone%	Early BIP%	PAR%
2019	37.0%	24.3%	38.6%	45.5%	30.2%	24.3%	9.5%	25.9%	49.7%	57.7%	38.1%	19.0%	49.2%	19.3%	11.1%
2020	36.4%	15.2%	48.5%	21.2%	39.4%	39.4%	6.1%	45.5%	39.4%	69.7%	30.3%	15.2%	63.6%	21.7%	20.0%
2021	33.3%	33.3%	33.3%	28.6%	33.3%	38.1%	9.5%	33.3%	33.3%	42.9%	42.9%	33.3%	47.6%	11.1%	14.3%
2022	21.4%	30.1%	48.5%	34.0%	25.2%	40.8%	10.7%	24.3%	45.6%	55.3%	36.9%	23.3%	48.5%	17.5%	4.2%
RP MLB AVG	34.0%	27.9%	38.1%	48.5%	27.0%	24.5%	7.6%	29.0%	43.1%	54.9%	31.7%	29.1%	49.2%	13.3%	16.9%

Year	MPH	Usage%	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	GB%	FB%	AVG	wOBA	BABIP	HR/FB%	xAVG	xwOBA	HC%	Spin
2019	83.3	11.0%	11.1%	52.6%	10.5%	7.9%	18.4%	52.6%	47.4%	0.0%	60.0%	.400	.472	.400	0.0%	.342	.385	12.5%	2,574
2020	84.6	28.8%	12.5%	61.9%	9.5%	14.3%	23.8%	57.1%	52.4%	0.0%	100.0%	.500	.990	.000	50.0%	.306	.496	50.0%	2,579
2021	85.1	35.9%	34.8%	39.5%	23.7%	13.2%	36.8%	60.5%	57.9%	50.0%	25.0%	.143	.126	.250	0.0%	.204	.208	14.3%	2,590
2022	84.3	30.4%	33.3%	34.7%	18.8%	13.9%	32.7%	55.4%	51.5%	28.6%	50.0%	.200	.287	.167	28.6%	.196	.293	17.4%	2,413
RP MLB AVG	83.4	34.4%	31.7%	40.1%	15.8%	15.3%	31.1%	61.2%	56.4%	40.4%	38.2%	.209	.275	.264	12.5%	.210	.283	20.2%	2,366

Year	xAVG	xwOBA	xBABIP	xwoBACON	HC%	Brl%	ICR%	IPA%	EV	FB EV	LA	xMov	yMov	xRP	yRP	Ext.	Spin
2019	.342	.385	.342	.340	12.5%	0.0%	40.0%	25.0%	87.1	90.4	31.2	0.5	0.2	-2.2	6.0	6.0	2,574
2020	.306	.496	.182	.496	50.0%	50.0%	50.0%	50.0%	96.2	96.2	31.5	2.8	2.7	-1.8	6.0	6.2	2,579
2021	.204	.208	.358	.365	14.3%	0.0%	50.0%	28.6%	86.8	75.5	19.3	3.4	1.8	-1.9	6.0	6.6	2,590
2022	.196	.293	.160	.432	17.4%	21.4%	28.6%	17.4%	87.6	88.0	20.8	3.7	0.9	-1.8	6.0	6.6	2,413
RP MLB AVG	.210	.283	.266	.361	20.2%	7.7%	36.6%	23.0%	86.2	85.6	15.9	3.8	1.1	-0.9	5.6	6.2	2,366

Year	P	TBF	1B	2B	3B	HR	K	BB	HBP	WP	Strikes	Balls	AVG	SLG	wOBA
2019	38	8	1	0	1	0	1	2	0	0	20	18	.400	.800	.472
2020	21	2	0	0	0	1	0	0	0	1	12	9	.500	2.000	.990
2021	38	7	1	0	0	0	3	0	0	0	23	15	.143	.143	.126
2022	101	23	2	0	0	2	8	1	0	1	56	45	.200	.500	.287
RP MLB AVG	99	25	3	1	0	1	8	2	0	0	62	37	.209	.355	.275

Year	GB%	LD%	FB%	IFFB%	HR/FB%	Pull%	Cent%	Oppo%	Foul%	Weak%	Top%	Under%	Fl&B%	Solid%	SS%
2019	0.0%	40.0%	60.0%	20.0%	0.0%	80.0%	0.0%	20.0%	21.1%	0.0%	0.0%	60.0%	40.0%	0.0%	60.0%
2020	0.0%	0.0%	100.0%	0.0%	50.0%	0.0%	100.0%	0.0%	23.8%	0.0%	0.0%	50.0%	0.0%	0.0%	50.0%
2021	50.0%	25.0%	25.0%	25.0%	0.0%	75.0%	25.0%	0.0%	13.2%	0.0%	25.0%	25.0%	50.0%	0.0%	25.0%
2022	28.6%	21.4%	50.0%	7.1%	28.6%	42.9%	42.9%	14.3%	8.9%	0.0%	28.6%	42.9%	7.1%	0.0%	42.9%
RP MLB AVG	40.4%	21.4%	38.2%	11.3%	12.5%	46.0%	31.7%	22.3%	14.3%	4.6%	28.6%	30.2%	24.0%	4.9%	35.9%

Year	HC%	Brl%	ICR%	IPA%	AVG	wOBA	BABIP	BACON	xAVG	xwOBA	xBABIP	xwoBACON	EV	FB EV	LA
2019	12.5%	0.0%	40.0%	25.0%	.400	.472	.400	.400	.342	.385	.342	.340	87.1	90.4	31.2
2020	50.0%	50.0%	50.0%	50.0%	.500	.990	.000	.500	.306	.496	.182	.496	96.2	96.2	31.5
2021	14.3%	0.0%	50.0%	28.6%	.143	.126	.250	.250	.204	.208	.358	.365	86.8	75.5	19.3
2022	17.4%	21.4%	28.6%	17.4%	.200	.287	.167	.286	.196	.293	.160	.432	87.6	88.0	20.8
RP MLB AVG	20.2%	7.7%	36.6%	23.0%	.209	.275	.264	.298	.210	.283	.266	.361	86.2	85.6	15.9

Year	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	Whiff%	Swing%	Con%	O-Con%	Z-Con%	ECS%	2-Str O-Sw%	F-Str%	TF-Str%
2019	11.1%	52.6%	10.5%	7.9%	18.4%	52.6%	47.4%	23.5%	44.7%	76.5%	50.0%	80.0%	7.7%	16.7%	50.0%	37.5%
2020	12.5%	61.9%	9.5%	14.3%	23.8%	57.1%	52.4%	22.2%	42.9%	77.8%	0.0%	87.5%	23.1%	0.0%	75.0%	75.0%
2021	34.8%	39.5%	23.7%	13.2%	36.8%	60.5%	57.9%	50.0%	47.4%	50.0%	25.0%	70.0%	13.6%	20.0%	37.5%	37.5%
2022	33.3%	34.7%	18.8%	13.9%	32.7%	55.4%	51.5%	45.2%	41.6%	54.8%	22.7%	90.0%	15.9%	36.4%	53.8%	42.3%
RP MLB AVG	31.7%	40.1%	15.8%	15.3%	31.1%	61.2%	56.4%	34.5%	45.9%	65.5%	45.8%	80.2%	21.1%	27.7%	57.9%	50.1%

Year	aLoc%	x-mLoc%	gLoc%	hiLoc%	y-mLoc%	loLoc%	heLoc%