Since 2018, George Kirby has the highest K/BB, with 6.75 K/BB.

Interpreted as:

k/bb with a minimum of 0.5 IP per team game leaders since 2018

	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	6.75	103	41	31	.569	103	3.51	567	1	0	0	589.2	563	230	245	66	84	22	0	1	2,396	12	8.65	1.28	1.01	23.7	3.5	1.10	.300	3.74	91	3.24	82	8.59	48.7
2	Jacob deGrom J. deGrom	6.65	134	49	30	.620	134	2.20	1,078	2	1	0	821.2	561	201	220	73	162	16	0	4	3,154	10	11.81	1.77	0.80	34.2	5.1	0.88	.267	2.41	55	2.34	56	6.14	168.8
3	Spencer Schwellenbach S. Schwellenbach	5.73	38	15	11	.577	38	3.23	235	1	0	0	234.1	195	84	93	27	41	8	0	2	934	5	9.03	1.57	1.04	25.2	4.4	1.01	.270	3.57	77	3.25	81	7.49	19.4
4	Shota Imanaga S. Imanaga	5.62	46	23	8	.742	46	3.01	253	0	0	0	269.1	225	90	101	44	45	4	0	0	1,071	3	8.45	1.50	1.47	23.6	4.2	1.00	.250	3.38	75	3.93	99	7.52	1.5
5	Max Scherzer M. Scherzer	5.61	170	76	39	.661	170	2.95	1,307	4	1	0	1028.0	798	337	354	132	233	48	0	7	4,099	18	11.44	2.04	1.16	31.9	5.7	1.00	.280	3.10	71	3.12	73	6.99	128.3
6	Chris Sale C. Sale	5.48	127	52	29	.642	127	3.07	976	1	1	0	723.1	581	247	268	72	178	55	0	1	2,934	15	12.14	2.21	0.90	33.3	6.1	1.05	.308	3.33	68	2.73	65	7.23	119.5
7	Tarik Skubal T. Skubal	5.22	129	52	34	.605	126	3.16	835	1	1	0	716.2	577	252	270	84	160	25	1	0	2,861	10	10.49	2.01	1.05	29.2	5.6	1.03	.281	3.39	77	3.12	75	7.25	79.7
8	Gerrit Cole G. Cole	5.11	190	94	38	.712	190	2.97	1,517	7	5	0	1171.2	878	386	413	150	297	29	0	2	4,634	26	11.65	2.28	1.15	32.7	6.4	1.00	.276	3.17	71	3.09	72	6.74	156.1
9	Shane Bieber S. Bieber	5.10	136	62	32	.660	134	3.22	958	5	2	0	843.0	752	302	323	94	188	18	1	1	3,415	34	10.23	2.01	1.00	28.1	5.5	1.12	.305	3.45	76	3.08	73	8.03	108
10	Paul Skenes P. Skenes	5.03	47	18	11	.621	47	1.95	332	1	0	0	277.0	194	60	65	17	66	12	0	0	1,075	4	10.79	2.14	0.55	30.9	6.1	0.94	.273	2.11	46	2.37	58	6.30	52.3
11	Justin Verlander J. Verlander	5.01	161	75	42	.641	161	3.00	1,087	3	2	0	970.0	762	323	349	123	217	36	0	0	3,876	21	10.09	2.01	1.14	28.0	5.6	1.01	.265	3.24	72	3.36	80	7.07	89.2
12	Joe Ryan J. Ryan	5.01	107	44	31	.587	106	3.67	671	1	1	0	602.2	493	246	257	90	134	32	0	0	2,431	8	10.02	2.00	1.34	27.6	5.5	1.04	.268	3.84	90	3.70	90	7.36	27.8
13	Colton Gordon C. Gordon	5.00	14	4	4	.500	13	5.27	60	0	0	0	66.2	85	39	41	16	12	2	1	2	296	3	8.10	1.62	2.16	20.3	4.1	1.45	.335	5.54	131	5.05	123	11.48	-7
14	Logan Gilbert L. Gilbert	4.85	137	43	34	.558	137	3.58	829	2	1	0	787.2	660	313	333	102	171	22	0	6	3,178	38	9.47	1.95	1.17	26.1	5.4	1.06	.272	3.80	92	3.48	87	7.54	45
15	Bryan Woo B. Woo	4.84	63	21	14	.600	63	3.30	339	0	0	0	355.0	284	130	138	49	70	13	0	1	1,417	3	8.59	1.77	1.24	23.9	4.9	1.00	.248	3.50	85	3.74	93	7.20	9.9
16	Brandon Woodruff B. Woodruff	4.77	128	48	23	.676	113	2.94	801	2	1	1	672.2	509	220	229	77	168	27	4	0	2,672	8	10.72	2.25	1.03	30.0	6.3	1.01	.270	3.06	69	3.14	74	6.81	83.3
17	Clayton Kershaw C. Kershaw	4.71	154	74	32	.698	153	2.86	894	0	0	0	879.1	731	279	310	105	190	17	0	1	3,510	36	9.15	1.94	1.07	25.5	5.4	1.05	.272	3.17	70	3.40	80	7.48	83.2
18	Hyun Jin Ryu H. Jin Ryu	4.69	104	45	23	.662	104	3.17	521	2	2	0	580.0	543	204	225	70	111	9	0	3	2,360	4	8.08	1.72	1.09	22.1	4.7	1.13	.287	3.49	74	3.57	84	8.43	45.4
19	Zack Wheeler Z. Wheeler	4.53	216	92	52	.639	216	3.11	1,462	4	2	0	1351.2	1,117	467	502	126	323	58	0	8	5,455	24	9.73	2.15	0.84	26.8	5.9	1.07	.284	3.34	75	3.06	72	7.44	174
20	Bailey Ober B. Ober	4.49	107	29	28	.509	107	4.01	566	2	0	0	574.1	519	256	266	96	126	20	0	0	2,342	4	8.87	1.97	1.50	24.2	5.4	1.12	.276	4.17	98	4.13	99	8.13	1.4
21	Yusmeiro Petit Y. Petit	4.47	258	22	10	.688	0	3.07	201	0	0	2	275.2	221	94	96	39	45	1	34	5	1,077	4	6.56	1.47	1.27	18.7	4.2	0.96	.230	3.13	73	4.06	96	7.22	5.5
22	Zach Eflin Z. Eflin	4.46	178	64	57	.529	166	4.07	856	3	2	1	946.0	960	428	463	134	192	26	5	13	3,949	11	8.14	1.83	1.27	21.7	4.9	1.22	.301	4.40	99	3.90	92	9.13	34.6
23	Zack Greinke Z. Greinke	4.42	164	53	49	.520	160	3.73	743	1	0	0	933.2	902	387	409	124	168	20	0	5	3,797	21	7.16	1.62	1.20	19.6	4.4	1.15	.284	3.94	87	3.92	94	8.69	27.8
24	Michael Pineda M. Pineda	4.36	64	24	20	.545	63	4.08	279	0	0	0	328.2	338	149	158	53	64	8	0	2	1,369	9	7.64	1.75	1.45	20.4	4.7	1.22	.295	4.33	94	4.23	98	9.26	4.1
25	Chris Paddack C. Paddack	4.35	109	31	34	.477	106	4.46	509	0	0	0	550.1	542	273	292	87	117	14	0	2	2,301	11	8.32	1.91	1.42	22.1	5.1	1.20	.289	4.78	110	4.08	96	8.86	9.5