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Is this a thinly-veiled Brady/Manning post?

Is this a thinly-veiled Brady/Manning post?

Last weekend, I looked at career rushing stats in wins and losses; today I will do the same but for quarterbacks.

I looked at all games, including playoffs, from 1960 to 2011, for all quarterbacks with at least 5,000 career passing yards over that time period. The table below lists the following information for each passer:

– His first year (or 1960, if he played before 1960) and his last year (or 2011, if still active)
– All the franchises he played for (which you can search for in the search box)
– His number of career wins, and his touchdown rate, interception rate, yards per attempt and Adjusted Yards per Attempt (which includes a 20-yard bonus for touchdown passes and a 45-yard penalty for interceptions) in wins [1]Unfortunately, I excluded sack data from this study due to its general unavailability for most of the covered time period.
– His number of career losses, and his touchdown rate, interception rate, yards per attempt and Adjusted Yards per Attempt in losses

The table is sorted by AY/A in wins; unsurprisingly, Aaron Rodgers — who is the career leader in that metric — tops this table, too. In fact, Rodgers is also the leader in AY/A in losses. Note that this table includes all games played by the quarterback, not just his starts.



But let’s get to the more interesting question: have any quarterbacks performed better in losses than in wins? The table below shows the same biographical information and then also displays each quarterback’s career statistics (subject to the same caveats) in games, passing yards, Y/A, and AY/A. The next four columns reproduce the information above, showing each quarterback’s Y/A and AY/A in wins and losses. To make it easier to follow, I’ve highlighted the two win columns in light blue and the two loss columns in light red.

The final two columns show the differences in each player’s Y/A and AY/A. It is sorted by the AY/A differential, which is AY/A in losses minus AY/A in wins. If you sort by the passing yards column, you see that most of the game’s best quarterbacks generally averaged about 2 fewer AY/A in losses than in wins. Dan Marino, Warren Moon, Vinny Testaverde, and Donovan McNabb appear to be exceptions, with smaller differentials, although I don’t know what you can draw from that.



In the absence of any other narrative, we can always just talk about Tom Brady and Peyton Manning and Dan Marino and Joe Montana. Brady and Manning have nearly identical Y/A and AY/A averages in wins, but Manning’s play was better in losses. When it comes to Marino and Montana, the opposite effect occurs. Marino and Montana had nearly the same AY/A in losses — Marino was at 5.1, Montana at 4.9 — but in wins, Montana was at 7.2 AY/A while Marino was only at 6.7 AY/A.

References

References
1 Unfortunately, I excluded sack data from this study due to its general unavailability for most of the covered time period.
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