That sort of turnover differential just isn't going to happen again, unfortunately. There have been 21 other teams since 1978 who produced a turnover margin of plus-20 or more, and as you might suspect I'm about to say, they weren't able to keep it up. The following year, their average turnover differential was just over three. Not per game. Over the whole season. On average, they shifted by more than 20 turnovers over the course of the campaign. That decline was joined by a decrease in wins: Those teams won an average of 2.5 fewer games the following season.