1) Calculate each player’s Adjusted Catch Yards in a game. In a 1974 playoff loss to Pittsburgh, Oakland wide receiver Cliff Branch had a great game. He caught 9 passes for 186 yards and 1 touchdown; giving him 5 yards for every reception and 20 yards for every touchdown, that translates to 251 Adjusted Catch Yards.
In 2012, Calvin Johnson dominated the Saints defenses in the lone playoff game of his career; Johnson finished with a 12/211/2 stat line, worth 311 ACY, tied (with Reggie Wayne against Denver) for the third most ACY in a playoff game since 1960.
2) But we need to account for era, and we should also account for the quality of the opposition. So I looked at every team since 1960, and calculated the ACY allowed to all opposing players in every regular season game. Then, I took the top 16 (or fewer, in non-16 game seasons) performances during the regular season to calculate the average ACY allowed by each defense to the top opposing receiver.
This is a very, very high baseline, of course, but I am trying to measure dominance. If a team allows 80 yards, on average, to the opposing WR1, then an 80-yard playoff performance shouldn’t stand out as special.
The 2011 Saints allowed an average of 155 ACY to the top 16 players it faced that year. As a result, Johnson gets credit for 156 ACY over expectation. The 1974 Steelers? Well, they allowed just 94 ACY to the top 14 players it faced during the regular season. That gives Branch 157 ACY over expectation.
So Branch slightly beats Megatron using this formula, as gaining 251 ACY against a defense that usually allows 94 is seen as a hair better than gaining 311 against a defense that usually allows 156. Is this formula perfect? Of course not, but it’s a start. Branch’s game checks in as the 8th best since 1960, while Johnson’s is 10th. The top game? That honor belongs to Steve Smith, naturally. [click to continue…]