We all know Rex's defenses are great. How great? Here are some numbers. The following are from pro-football-reference.com, and take into account the years 2005-2014, the years that Rex was either a defensive coordinator or head coach.
Between 2005 and 2012, Rex Ryan's defenses never ranked lower than 6th overall. Eight straight years, 6th or better.
In 10 seasons, Rex's defenses have never ranked worse than 11th in total yards allowed.
In 6 out of 10 seasons, Rex's defenses have been 5th or better in yards allowed, including two 1st place finishes.
In 5 out of 10 seasons, Rex's defenses have been 10th or better in total points allowed. They were 1st twice and 3rd once.
In 8 out of 10 seasons, Rex's defenses were ranked 9th or better in rushing yards allowed. They were 3rd or better 5 times.
In 9 out of 10 seasons, Rex's defenses were ranked 8th or better in average yards per rush allowed. They were 1st twice.
In 8 out of 10 seasons, Rex's defenses were ranked 11th or better in rushing TDs allowed They were 1st twice and 3rd once.
All of that seems pretty impressive, but "What about pass defense?", you say.
In 7 out of 10 seasons, Rex's defenses were ranked 8th or better in passing yards allowed. They were 1st once and 2nd twice.
In 7 out of 10 seasons, Rex's defenses were ranked 9th or better in avg yards/pass allowed. They ranked 1st and 2nd once each.
In 6 out of 10 seasons, Rex's defenses were ranked 10th or better in passing TDs allowed. They were 1st and 2nd once each.
What does all of this mean? Rex Ryan's defenses are consistently good or great. His defenses consistently stop the run, allow low rushing-yards-per-average, and give up few rushing TDs. They also consistently stop the pass effectively. I must repeat the following: For 8 straight seasons, Rex's defense were never worse than 6th overall. Thats extremely impressive.
One more bonus Rex Ryan number for you. It doesn't have anything to do with defense, but I like it anyway: Rex Ryan has been a head coach in 6 playoff games, all on the road. He is 4-2 in those games. Winning record in the playoffs. ON THE ROAD. Aren't numbers fun?
Go Bills!