8 quarterbacks are tied for the best passer rating by a Chiefs quarterback in a game, with a 158.3 rating. The first three are Alex Smith on December 15, 2013, Trent Green on December 14, 2003 and Warren Moon on October 22, 2000.

which chiefs qb has the highest passer rating in a game
Interpreted as:
Which chiefs qb has the highest passer rating in a regular-season game?
12/15/2013Smith12/14/2003Green10/22/2000Moon10/23/1994Bono12/19/1993Krieg10/27/1974Dawson10/12/1969Flores10/30/1966Beathard9/7/1963Dawson11/28/1965Dawson9/22/1968Lee9/3/1995Bono10/13/1991DeBerg12/19/2004Green10/31/1999Grbac9/16/2018Mahomes9/30/2001Green12/1/2002Collins11/13/1960Enis9/11/1966Dawson10/29/1967Dawson9/7/2017Smith11/18/1962Dawson158.3158.3158.3158.3158.3158.3158.3158.3158.3158.0157.8156.6156.3155.4154.9154.8154.3153.8153.3151.1148.6148.6147.7
NAMEDATETMOPPRATECMPATTPCTYDSAVGTDTD%INTINT%SCKSCKY
Alex SmithAlex Smith12/15/2013KCKC@ OAK
@
158.3172085.028714.4525.000.0212
Trent GreenTrent Green12/14/2003KCKCvs. DET
vs.
158.3202580.034113.6312.000.000
Warren MoonWarren Moon10/22/2000KCKCvs. STL
vs.
158.333100.07826.0133.300.000
Steve BonoSteve Bono10/23/1994KCKCvs. SEA
vs.
158.322100.04120.5150.000.000
Dave KriegDave Krieg12/19/1993KCKCvs. SD
vs.
158.344100.05313.3125.000.000
Len DawsonLen Dawson10/27/1974KCKC@ SD
@
158.344100.08421.0125.000.0
Tom FloresTom Flores10/12/1969KCKCvs. HOU
vs.
158.311100.03333.01100.000.0
Pete BeathardPete Beathard10/30/1966KCKCvs. HOU
vs.
158.355100.014128.2240.000.0
Len DawsonLen Dawson9/7/1963KCKC@ DEN
@
158.3121580.027818.5426.700.0
Len DawsonLen Dawson11/28/1965KCKCvs. HOU
vs.
158.0141782.421112.4317.600.0
Jacky LeeJacky Lee9/22/1968KCKCvs. DEN
vs.
157.87887.59912.4225.000.0
Steve BonoSteve Bono9/3/1995KCKC@ SEA
@
156.6182378.327812.1313.000.000
Steve DeBergSteve DeBerg10/13/1991KCKCvs. MIA
vs.
156.391275.017714.8325.000.000
Trent GreenTrent Green12/19/2004KCKCvs. DEN
vs.
155.4161984.222411.8315.800.0318
Elvis GrbacElvis Grbac10/31/1999KCKCvs. SD
vs.
154.9111573.319412.9213.300.018
Patrick MahomesPatrick Mahomes9/16/2018KCKC@ PIT
@
154.8232882.132611.6621.400.014
Trent GreenTrent Green9/30/2001KCKC@ WAS
@
154.3212680.830711.8311.500.011
Todd CollinsTodd Collins12/1/2002KCKCvs. ARI
vs.
153.84580.05711.4120.000.000
Hunter EnisHunter Enis11/13/1960DLTDLTvs. DEN
vs.
153.35771.49713.9114.300.0
Len DawsonLen Dawson9/11/1966KCKC@ BUF
@
151.181172.712911.7218.200.0
Len DawsonLen Dawson10/29/1967KCKCvs. DEN
vs.
148.6121866.722212.3316.700.0
Alex SmithAlex Smith9/7/2017KCKC@ NE
@
148.6283580.036810.5411.400.0316
Len DawsonLen Dawson11/18/1962DLTDLT@ DEN
@
147.7111764.727516.2317.600.0
Bill KenneyBill Kenney12/16/1984KCKC@ SD
@
147.6172373.924510.7313.000.000
Steve DeBergSteve DeBerg12/10/1989KCKC@ GB
@
146.3151978.920310.7210.500.000
Results may be incomplete. StatMuse has complete game-level data for passer rating going back to the 1950 season.

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