Kansas City Chiefs Completion Percentage Leaders

Career totals with the Chiefs and the best single seasons in club history. Includes the 2026 season through October 19: these records are rebuilt every night, so a mark set yesterday is here this morning. Includes the club's AFL seasons (1960-1969), which the NFL's record book counts. Dallas Texans 1960-1962.

Chiefs records →

Patrick Mahomes holds the Chiefs career record with 66.2% completion percentage. The single-season record is 67.5%, by Alex Smith in 2017.

YDS TD RTG Y/A CMP% Y/G CMP ATT 1D TD% INT INT% SK

Rate records use the league's own minimums: a season needs 14 pass attempts per team game with the club, a career 1,500+ pass attempts with the club.

All-time Chiefs leaders

Career totals with the club

#	Player	With the club	CMP%	G
1	Patrick Mahomes	2017–2026	66.2%	131
2	Alex Smith	2013–2017	65.2%	76
3	Trent Green	2001–2006	61.9%	88
4	Elvis Grbac	1997–2000	57.9%	48
5	Steve DeBerg	1988–1991	57.8%	57
6	Len Dawson	1962–1975	57.2%	183
7	Bill Kenney	1980–1988	54.7%	106
8	Mike Livingston	1968–1979	52.1%	91

Single-season Chiefs records

Best seasons in club history

#	Player	Season	CMP%	G
1	Alex Smith	2017	67.5%	15
2	Patrick Mahomes	2024	67.5%	16
3	Patrick Mahomes	2023	67.2%	16
4	Patrick Mahomes	2022	67.1%	17
5	Alex Smith	2016	67.1%	15
6	Trent Green	2004	66.4%	16
7	Patrick Mahomes	2020	66.3%	15
8	Patrick Mahomes	2021	66.3%	17
9	Patrick Mahomes	2018	66.0%	16
10	Patrick Mahomes	2019	65.9%	14
11	Alex Smith	2015	65.3%	16
12	Alex Smith	2014	65.3%	15
13	Trent Green	2003	63.1%	16
14	Patrick Mahomes	2025	62.8%	14
15	Trent Green	2005	62.5%	16
16	Damon Huard	2007	62.1%	11
17	Trent Green	2002	61.1%	16
18	Len Dawson	1962	61.0%	14
19	Joe Montana	1993	60.7%	11
20	Damon Huard	2006	60.7%	10
21	Joe Montana	1994	60.7%	14
22	Alex Smith	2013	60.6%	15
23	Steve DeBerg	1989	60.5%	12
24	Steve Fuller	1980	60.3%	14
25	Elvis Grbac	2000	59.5%	14