Quarterbacks had their highest winning percentage in a season in 2001, winning 216.4 percent of the time.

Interpreted as:

best qb win percentage in a season career

	POSITION	W%	SEASON	GP	CMP	ATT	PCT	YDS	AVG	YDS/G	TD	INT	RTG	TD%	INT%	SCK	SCKY
1	Quarterback	2.164	2001	684	22,595	40,512	55.8	285,051	7.0	416.7	1,946	1,399	123.8	4.8	3.5
2	Quarterback	2.105	2026	19	639	979	65.3	7,280	7.4	383.2	54	14	143.1	5.5	1.4	53	357
3	Quarterback	1.983	2002	772	25,131	45,141	55.7	315,381	7.0	408.5	2,150	1,530	123.3	4.8	3.4
4	Quarterback	1.961	2021	887	31,531	51,118	61.7	386,175	7.6	435.4	2,745	1,302	137.8	5.4	2.5	3,585	23,521
5	Quarterback	1.926	2003	770	25,819	45,213	57.1	323,523	7.2	420.2	2,163	1,487	126.4	4.8	3.3
6	Quarterback	1.919	2022	896	32,387	52,853	61.3	389,194	7.4	434.4	2,779	1,316	135.5	5.3	2.5	3,539	23,298
7	Quarterback	1.918	2023	910	32,198	52,278	61.6	388,473	7.4	426.9	2,781	1,390	136.2	5.3	2.7	3,519	23,120
8	Quarterback	1.872	2020	570	21,117	34,389	61.4	256,371	7.5	449.8	1,897	900	137.0	5.5	2.6	2,385	15,441
9	Quarterback	1.805	2025	934	33,193	53,088	62.5	388,336	7.3	415.8	2,691	1,317	135.7	5.1	2.5	3,381	22,533
10	Quarterback	1.745	2010	807	27,425	45,721	60.0	329,512	7.2	408.3	2,358	1,429	131.3	5.2	3.1
11	Quarterback	1.744	2012	839	30,514	50,302	60.7	366,395	7.3	436.7	2,633	1,374	133.7	5.2	2.7
12	Quarterback	1.726	2024	919	32,274	52,402	61.6	387,981	7.4	422.2	2,733	1,394	135.7	5.2	2.7	3,449	22,439
13	Quarterback	1.724	2009	807	27,345	46,098	59.3	331,153	7.2	410.4	2,219	1,391	129.5	4.8	3.0
14	Quarterback	1.724	2008	803	27,109	45,671	59.4	320,483	7.0	399.1	2,257	1,440	128.3	4.9	3.2
15	Quarterback	1.723	2007	798	29,295	49,373	59.3	343,808	7.0	430.8	2,426	1,571	127.7	4.9	3.2
16	Quarterback	1.704	2013	845	30,237	50,520	59.9	367,977	7.3	435.5	2,601	1,475	132.2	5.1	2.9	2,184	14,506
17	Quarterback	1.692	2011	812	28,831	47,633	60.5	343,540	7.2	423.1	2,456	1,336	132.5	5.2	2.8
18	Quarterback	1.676	2004	706	23,195	40,564	57.2	285,687	7.0	404.7	1,971	1,327	125.8	4.9	3.3
19	Quarterback	1.673	2006	791	24,081	40,974	58.8	292,554	7.1	369.9	1,994	1,358	128.2	4.9	3.3
20	Quarterback	1.660	1997	617	18,449	33,937	54.4	242,049	7.1	392.3	1,416	1,191	121.0	4.2	3.5
21	Quarterback	1.653	2005	717	24,459	41,915	58.4	296,652	7.1	413.7	1,987	1,332	127.1	4.7	3.2
22	Quarterback	1.638	1999	657	20,742	37,904	54.7	264,424	7.0	402.5	858	1,372	113.6	2.3	3.6
23	Quarterback	1.614	1998	651	19,582	36,141	54.2	261,254	7.2	401.3	915	1,289	116.1	2.5	3.6
24	Quarterback	1.609	2018	884	30,732	51,178	60.0	378,970	7.4	428.7	2,772	1,361	134.8	5.4	2.7	3,493	22,771
25	Quarterback	1.605	2019	888	31,138	51,191	60.8	385,498	7.5	434.1	2,802	1,284	137.1	5.5	2.5	3,445	21,989