Dennis Leonard played 12 seasons for the Royals. He had 144 wins, 106 losses, an ERA of 3.70 and 1,323 strikeouts.

Interpreted as:

Dennis Leonard pitcher in his career

	NAME	SEASON	TM	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	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Dennis Leonard D. Leonard	1974	KCR	5	0	4	.000	4	5.32	8	0	0	0	22.0	28	13	15	0	12	3	0	0	105	0	3.27	4.91	0.67	0.00	7.6	11.4	1.82	.341	6.14	143	3.89	109	11.45	-0.9
2	Dennis Leonard D. Leonard	1975	KCR	32	15	7	.682	30	3.77	146	8	0	0	212.1	212	89	98	18	90	9	1	4	916	4	6.19	3.81	1.62	0.76	15.9	9.8	1.42	.297	4.15	97	3.70	99	8.99	0.5
3	Dennis Leonard D. Leonard	1976	KCR	35	17	10	.630	34	3.51	150	16	2	0	259.0	247	101	113	16	70	11	0	5	1,072	7	5.21	2.43	2.14	0.56	14.0	6.5	1.22	.280	3.93	99	3.21	93	8.58	7.1
4	Dennis Leonard D. Leonard	1977	KCR	38	20	12	.625	37	3.04	244	21	5	1	292.2	246	99	117	18	79	8	1	0	1,186	14	7.50	2.43	3.09	0.55	20.6	6.7	1.11	.272	3.60	74	2.75	69	7.56	40.3
5	Dennis Leonard D. Leonard	1978	KCR	40	21	17	.553	40	3.33	183	20	4	0	294.2	283	109	125	27	78	9	0	7	1,218	12	5.59	2.38	2.35	0.82	15.0	6.4	1.23	.278	3.82	88	3.41	91	8.64	11.5
6	Dennis Leonard D. Leonard	1979	KCR	32	14	12	.538	32	4.08	126	12	5	0	236.0	226	107	117	33	56	2	0	3	966	8	4.81	2.14	2.25	1.26	13.0	5.8	1.19	.258	4.46	96	4.21	103	8.62	-3.1
7	Dennis Leonard D. Leonard	1980	KCR	38	20	11	.645	38	3.79	155	9	3	0	280.1	271	118	127	30	80	1	0	5	1,172	12	4.98	2.57	1.94	0.96	13.2	6.8	1.25	.266	4.08	93	3.90	99	8.70	1.3
8	Dennis Leonard D. Leonard	1981	KCR	26	13	11	.542	26	2.99	107	9	2	0	201.2	202	67	79	15	41	3	0	5	837	5	4.78	1.83	2.61	0.67	12.8	4.9	1.20	.279	3.53	81	3.16	87	9.01	11
9	Dennis Leonard D. Leonard	1982	KCR	21	10	6	.625	21	5.10	58	2	0	0	130.2	145	74	82	20	46	2	0	3	579	4	3.99	3.17	1.26	1.38	10.0	7.9	1.46	.276	5.65	125	4.91	122	9.99	-13.4
10	Dennis Leonard D. Leonard	1983	KCR	10	6	3	.667	10	3.71	31	1	0	0	63.0	69	26	29	3	19	0	0	1	270	1	4.43	2.71	1.63	0.43	11.5	7.0	1.40	.304	4.14	91	3.28	84	9.86	4.4
11	Dennis Leonard D. Leonard	1985	KCR	2	0	0		0	0.00	1	0	0	0	2.0	1	0	0	0	0	0	1	0	7	0	4.50	0.00		0.00	14.3	0.0	0.50	.167	0.00	0	1.68	42	4.50	0.5
12	Dennis Leonard D. Leonard	1986	KCR	33	8	13	.381	30	4.44	114	5	2	0	192.2	207	95	106	22	51	4	0	6	821	6	5.33	2.38	2.24	1.03	13.9	6.2	1.34	.294	4.95	105	3.92	96	9.67	3.1
	Total			312	144	106	.576	302	3.70	1,323	103	23	1	2187.0	2,137	898	1,008	202	622	52	3	39	9,149	73	5.44	2.56	2.13	0.83	14.5	6.8	1.26	.278	4.15	93	3.59	93	8.79	62.5