List of NFL quarterbacks who have posted a perfect passer rating

In the National Football League, the highest official passer rating that a quarterback can achieve is 158.3, which is considered a perfect passer rating. Thirty-five different quarterbacks have had a "perfect game" since the advent of passer ratings in 1973. Four games have occurred in the post-season. Seven men have achieved the feat more than once: Peyton Manning has thrown four, Ben Roethlisberger and Kurt Warner have thrown three, and Craig Morton, Dave Krieg, Ken O'Brien, and Tom Brady have two. Of these, only Roethlisberger has had more than one in a single regular season, when he had two perfect ratings in 2007. Johnny Unitas, Joe Namath, Terry Bradshaw, Len Dawson, Bob Griese, James Harris,  Bob Lee, Craig Morton, and Eli Manning had at least one game with a perfect passer rating and at least one game with a passer rating of zero, the lowest possible passer rating. The 1989 season was the only season in which two different QBs threw a perfect game for the same team, the San Francisco 49ers, accomplished by Steve Young (week 7) and Joe Montana (week 10). To qualify, a QB must attempt at least 10 passes, a minimum of a 77.5% completion percentage, 11.875% touchdown passes percentage, a minimum of 12.5 yards per attempt, and zero interceptions. This is a list-in-progress of NFL perfect games (list complete back to 1960):

Frequency of a perfect game
Games with a perfect passer rating are rare in the NFL. Before the start of the 2010 NFL season, there have been 14,633 regular season games played and 467 postseason games, meaning that NFL passers have had over 30,000 opportunities to reach the perfect rating milestone. Of the rare number of times this has happened, only Ken O'Brien has achieved it in a 400 yard game, another rare performance for an NFL QB. However, with the league's increasing passing efficiency, these performances are starting to become more common in recent decades.

Perfect games have been thrown by two quarterbacks on the same day only once: October 29, 1978, when both Steve Grogan of the New England Patriots and Brian Sipe of the Cleveland Browns achieved the feat.

Statistics
Only two quarterbacks have accomplished a perfect passer rating with 30-or-more attempts. Ken O'Brien threw 26-for-32 in his perfect game for a completion rate of 81%, while Kurt Warner threw 24-for-30 in his perfect game for a completion rate of 80%. Dave Krieg and Frank Ryan share the record for completion rate in a perfect game; both threw 12-for-13 for 92%.

Only two quarterbacks have accomplished a perfect passer rating with six touchdowns thrown. Peyton Manning was the first to achieve the record on 28 Sept 2003 against the New Orleans Saints, while Tom Brady matched the feat on 21 Oct 2007 against the Miami Dolphins. Thirteen quarterbacks have accomplished a perfect game with only two touchdowns thrown. It is impossible to achieve a perfect game with only one touchdown because of the 10 passing attempt minimum to qualify, combined with the minimum 11.875% touchdown-to-attempted-pass ratio.

Only one quarterback has accomplished a perfect passer rating with more than 400 passing yards. Ken O'Brien threw for 431 yards on 2 Nov 1986 against the Seattle Seahawks. Only three quarterbacks have accomplished a perfect game with fewer than 150 passing yards. Scott Hunter threw for 138 yards on 31 Oct 1976 against the New Orleans Saints, Drew Bledsoe threw for 143 yards on 26 Dec 1993 against the Indianapolis Colts, and Rich Gannon threw for 146 yards on 15 Oct 1992 against the Detroit Lions.