This may be a bit of an extension of the Jets-Patriots rivalry, but these two coaches are developing a rivalry of their own.
Before Ryan took over in New York, the Patriots were decisively the better team year in and year out. Since 2009, however, the difference between the two teams has narrowed.
Both are known as defensive geniuses, but Ryan's defenses have been exponentially better than Belichick's in recent years. Since Ryan took over the Jets, the wins have been about even, the Jets losing four out of seven contests to the Patriots in three years.
It's not a great record, but it's not bad considering the Patriots are a 12-win team—at least—just about every year.
The rivalry took on a life of its own after the Jets were drubbed by the Pats on Monday night in 2010. The Jets responded by knocking the 14-2 Patriots out of the playoffs in the AFC Divisional Playoffs.
The following season, Belichick took great pride in beating Ryan's Jets in the Meadowlands, using some colorful, choice words to describe his team's offensive success.
Neither of these coaches seem to be going anywhere anytime soon. This rivalry could really turn into something special.