Tony Romo had the best passer rating by a quarterback in a game in 2006, with a 158.3 rating versus the Texans on October 15, 2006.

which quarterback has the highest passer rating in a game in 2006
Interpreted as:
Which quarterback has the highest passer rating in a regular-season game in 2006?
10/15/2006Romo10/15/2006Roethlisberger11/23/2006Romo9/17/2006Grossman10/22/2006Roethlisberger10/22/2006Batch10/29/2006Vick12/17/2006Losman12/10/2006Losman12/10/2006Brees10/22/2006Manning9/17/2006Carr11/5/2006Huard12/31/2006Testaverde10/29/2006Grossman12/24/2006Leinart11/5/2006Brees12/3/2006Garrard12/18/2006Manning12/10/2006Rivers12/24/2006Manning12/24/2006Bulger9/11/2006Rivers158.3153.8148.9148.0147.3145.0142.7142.5140.8140.8140.4140.2138.3137.5137.4137.3136.7136.4136.3136.0135.3134.5133.9
NAMEDATETMOPPRATECMPATTPCTYDSAVGTDTD%INTINT%SCKSCKY
Tony RomoTony Romo10/15/2006DALDALvs. HOU
vs.
158.322100.03517.5150.000.000
Ben RoethlisbergerBen Roethlisberger10/15/2006PITPITvs. KC
vs.
153.8161984.223812.5210.500.016
Tony RomoTony Romo11/23/2006DALDALvs. TB
vs.
148.9222975.930610.6517.200.018
Rex GrossmanRex Grossman9/17/2006CHICHIvs. DET
vs.
148.0202774.128910.7414.800.000
Ben RoethlisbergerBen Roethlisberger10/22/2006PITPIT@ ATL
@
147.3162272.723810.8313.600.0315
Charlie BatchCharlie Batch10/22/2006PITPIT@ ATL
@
145.081361.519515.0215.400.000
Michael VickMichael Vick10/29/2006ATLATL@ CIN
@
142.7192770.429110.8311.100.0214
J.P. LosmanJ.P. Losman12/17/2006BUFBUFvs. MIA
vs.
142.5131968.420010.5315.800.0314
J.P. LosmanJ.P. Losman12/10/2006BUFBUF@ NYJ
@
140.8101566.715710.5213.300.0313
Drew BreesDrew Brees12/10/2006NONO@ DAL
@
140.8263868.438410.1513.200.017
Peyton ManningPeyton Manning10/22/2006INDINDvs. WAS
vs.
140.4253571.43429.8411.400.000
David CarrDavid Carr9/17/2006HOUHOU@ IND
@
140.2222684.62198.4311.500.0428
Damon HuardDamon Huard11/5/2006KCKC@ STL
@
138.3101566.71489.9320.000.0217
Vinny TestaverdeVinny Testaverde12/31/2006NENE@ TEN
@
137.52366.7299.7133.300.000
Rex GrossmanRex Grossman10/29/2006CHICHIvs. SF
vs.
137.4232979.32528.7310.300.000
Matt LeinartMatt Leinart12/24/2006ARIARI@ SF
@
137.391369.216212.517.700.019
Drew BreesDrew Brees11/5/2006NONO@ TB
@
136.7243275.03149.839.400.000
David GarrardDavid Garrard12/3/2006JAXJAX@ MIA
@
136.4162272.722910.429.100.0426
Peyton ManningPeyton Manning12/18/2006INDINDvs. CIN
vs.
136.3293680.62827.8411.100.010
Philip RiversPhilip Rivers12/10/2006SDSDvs. DEN
vs.
136.0152365.227912.128.700.013
Peyton ManningPeyton Manning12/24/2006INDIND@ HOU
@
135.3212777.82057.6311.100.000
Marc BulgerMarc Bulger12/24/2006STLSTLvs. WAS
vs.
134.5253865.838810.2410.500.016
Philip RiversPhilip Rivers9/11/2006SDSD@ OAK
@
133.981172.71089.819.100.000
Matt HasselbeckMatt Hasselbeck12/10/2006SEASEA@ ARI
@
133.5202871.42438.7310.700.0315
Damon HuardDamon Huard10/1/2006KCKCvs. SF
vs.
133.3182378.32089.028.700.000

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