Since 2019, George Kirby has the best K/BB, with 7.56 K/BB.

Interpreted as:

k/bb with a minimum of 0.5 IP per team game leaders since 2019

	NAME	K/BB	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	George Kirby G. Kirby	7.56	89	34	26	.567	89	3.43	484	1	0	0	511.2	495	195	210	57	64	18	0	1	2,077	10	8.51	1.13	1.00	23.3	3.1	1.09	.301	3.69	89	3.22	81	8.71	43.4
2	Jacob deGrom J. deGrom	7.52	85	30	17	.638	85	2.28	699	1	1	0	502.1	337	127	139	49	93	10	0	1	1,923	8	12.52	1.67	0.88	36.3	4.8	0.86	.269	2.49	56	2.27	54	6.04	110.4
3	Max Scherzer M. Scherzer	5.61	129	56	30	.651	129	3.01	959	2	0	0	763.1	610	255	268	101	171	34	0	3	3,055	13	11.31	2.02	1.19	31.4	5.6	1.02	.284	3.16	72	3.19	75	7.19	92.3
4	Spencer Schwellenbach S. Schwellenbach	5.52	27	9	9	.500	27	3.24	160	0	0	0	161.1	137	58	63	18	29	7	0	2	650	4	8.93	1.62	1.00	24.6	4.5	1.03	.273	3.51	78	3.27	83	7.64	12.4
5	Gerrit Cole G. Cole	5.33	158	79	33	.705	158	2.98	1,241	6	4	0	971.1	735	322	345	131	233	22	0	2	3,835	17	11.50	2.16	1.21	32.4	6.1	1.00	.274	3.20	72	3.17	74	6.81	123.4
6	Chris Sale C. Sale	5.28	92	36	24	.600	92	3.59	671	1	1	0	511.1	442	204	222	59	127	37	0	1	2,104	11	11.81	2.24	1.04	31.9	6.0	1.11	.317	3.91	80	3.02	71	7.78	69.2
7	Paul Skenes P. Skenes	5.28	30	14	6	.700	30	2.15	211	0	0	0	175.2	125	42	46	14	40	7	0	0	679	3	10.81	2.05	0.72	31.1	5.9	0.94	.273	2.36	51	2.57	64	6.40	28.7
8	Shane Bieber S. Bieber	5.09	116	51	27	.654	115	3.02	840	5	2	0	728.1	622	244	263	81	165	16	1	1	2,930	29	10.38	2.04	1.00	28.7	5.6	1.08	.296	3.25	71	3.06	72	7.69	95.2
9	Joe Ryan J. Ryan	5.02	91	35	28	.556	91	3.84	572	1	1	0	510.1	427	218	227	81	114	26	0	0	2,072	8	10.09	2.01	1.43	27.6	5.5	1.06	.271	4.00	95	3.81	93	7.53	16.3
10	Shota Imanaga S. Imanaga	4.98	36	18	4	.818	36	2.88	204	0	0	0	212.1	180	68	79	34	41	3	0	0	853	3	8.65	1.74	1.44	23.9	4.8	1.04	.256	3.35	72	3.92	99	7.63	0.8
11	Clayton Kershaw C. Kershaw	4.88	114	59	25	.702	113	2.85	693	0	0	0	646.1	521	205	226	82	142	13	0	1	2,564	22	9.65	1.98	1.14	27.0	5.5	1.03	.269	3.15	69	3.41	79	7.25	65
12	Logan Gilbert L. Gilbert	4.84	127	40	31	.563	127	3.55	755	2	1	0	734.2	617	290	307	94	156	19	0	6	2,959	33	9.25	1.91	1.15	25.5	5.3	1.05	.270	3.76	91	3.49	88	7.56	40.5
13	Ryan Gusto R. Gusto	4.83	8	3	1	.750	4	3.00	29	0	0	0	27.0	25	9	9	3	6	1	0	0	110	0	9.67	2.00	1.00	26.4	5.5	1.15	.310	3.00	77	3.13	78	8.33	2.6
14	Tarik Skubal T. Skubal	4.83	113	44	33	.571	110	3.29	696	0	0	0	612.0	508	224	242	76	144	22	1	0	2,468	8	10.24	2.12	1.12	28.2	5.8	1.07	.282	3.56	80	3.31	80	7.47	54.3
15	Zach Eflin Z. Eflin	4.83	143	49	45	.521	131	3.83	691	3	2	1	764.2	756	325	352	102	143	22	5	9	3,160	6	8.13	1.68	1.20	21.9	4.5	1.18	.297	4.14	92	3.76	88	8.90	41.6
16	Brandon Woodruff B. Woodruff	4.79	103	41	23	.641	103	2.93	709	2	1	0	595.0	456	194	202	66	148	24	0	0	2,367	6	10.72	2.24	1.00	30.0	6.3	1.02	.275	3.06	69	3.09	72	6.90	78.1
17	Justin Verlander J. Verlander	4.73	114	58	26	.690	114	3.00	742	2	1	0	693.2	528	231	250	88	157	23	0	0	2,756	14	9.63	2.04	1.14	26.9	5.7	0.99	.252	3.24	72	3.46	82	6.85	57.6
18	Mike Leake M. Leake	4.70	32	12	11	.522	32	4.29	127	2	1	0	197.0	227	94	114	41	27	10	0	2	835	2	5.80	1.23	1.87	15.2	3.2	1.29	.295	5.21	97	5.18	117	10.37	-16.9
19	Zack Wheeler Z. Wheeler	4.68	171	72	41	.637	171	3.15	1,151	3	2	0	1068.2	899	374	404	101	246	43	0	8	4,320	21	9.69	2.07	0.85	26.6	5.7	1.07	.287	3.40	75	3.06	72	7.57	142.8
20	Bailey Ober B. Ober	4.67	94	28	22	.560	94	3.79	509	1	0	0	504.0	438	212	221	78	109	17	0	0	2,033	4	9.09	1.95	1.39	25.0	5.4	1.09	.273	3.95	92	3.92	94	7.82	12.9
21	Bryan Woo B. Woo	4.55	46	15	9	.625	46	3.31	232	0	0	0	247.1	196	91	96	30	51	11	0	1	990	1	8.44	1.86	1.09	23.4	5.2	1.00	.249	3.49	86	3.63	91	7.13	9.7
22	Hyun Jin Ryu H. Jin Ryu	4.50	89	38	20	.655	89	3.36	432	2	2	0	497.2	475	186	202	61	96	8	0	2	2,036	4	7.81	1.74	1.10	21.2	4.7	1.15	.288	3.65	77	3.67	85	8.59	36
23	Tyler Glasnow T. Glasnow	4.41	87	36	16	.692	87	3.21	653	0	0	0	484.2	339	173	180	58	148	2	0	0	1,918	44	12.13	2.75	1.08	34.0	7.7	1.00	.266	3.34	78	2.98	71	6.30	65.6
24	Yoshinobu Yamamoto Y. Yamamoto	4.40	25	11	4	.733	25	2.35	154	0	0	0	130.0	102	34	39	9	35	1	0	0	521	3	10.66	2.42	0.62	29.6	6.7	1.05	.289	2.70	58	2.49	60	7.06	23.1
25	Aaron Nola A. Nola	4.38	181	63	56	.529	181	3.94	1,219	6	4	0	1087.1	967	476	503	149	278	36	0	7	4,460	11	10.09	2.30	1.23	27.3	6.2	1.15	.294	4.16	93	3.58	83	8.00	88.1