That’s bad, but not as historically bad as I would have thought. From 2000 to 2006, the Detroit Lions had a 0.295 winning percentage, the worst in the NFL. And from 2007 to 2011, the Rams had an anemic 0.188 winning percentage, the worst in the NFL. There was a common denominator for both of those teams: defensive end James Hall.
How did I find Hall? I looked at all players with 100 career games played. Then I calculated the winning percentage for his team in each season of his career, weighted by the number of games he played that season. So when calculating the adjusted career winning percentage for Hall, who played in 165 games and in 16 games for the 2008 Rams, 9.7% of his Adj Car Win% is based off of that team’s 2-14 record. The 2000 Lions went 9-7, but Hall only played in 5 games that year, so the 9-7 mark only counts for 3% of his career record. And the fact that the Lions went 3-2 in the 5 games Hall actually played is irrelevant: for calculating Adj Car Win%, I just used the team’s overall winning percentage multiplied by the number of games he played.
There are over 4,000 players who have played in 100 career games, and Hall has the lowest adjusted career winning percentage. The second-lowest? That honor belongs to John Greco, who was a teammate of Hall’s in St. Louis from 2008 to 2010, and has been a teammate of Thomas in Cleveland ever since.
Below are the 100 players with the worst adjusted career winning percentages: Thomas checks in at #35.
Thomas has a career AV of 82; what if we limit our list to players with career AVs of at least 75? Thomas has the second lowest adjusted career winning percentage.
As always, please leave your thoughts in the comments.