There were times in Philadelphia when Andy Reid and Michael Vick would be the last ones in the Eagles' facility, going over game film and talking about life late into the night.
Often, Reid would jokingly tell Vick what he would do to stop him.
For the second time in two years, Reid will have to draw on that knowledge.
Vick was handed the starting job for the New York Jets this week, taking over from slumping Geno Smith.
And wouldn't you know it? The Jets are headed to Kansas City on Sunday, where Reid has been busy preparing the Chiefs to slow down the veteran quarterback.
"If there is anybody who knows me it's him, and there has been times that he has sat there and told me what he would do if he played me," Vick said. "I played against Kansas City last year and it wasn't easy by any stretch. But like I said, that's part of the challenge."
Vick was still with the Eagles a year ago, when Reid returned to Philadelphia in his first season with the Chiefs. He threw for 201 yards, but was picked off twice in a 26-16 defeat.
The two have remained close, their relationship forged by years of turmoil in both of their lives. It was Reid who gave Vick a second chance when he was released from a federal prison near Kansas City after serving a sentence on dog-fighting charges. It was Vick who lent his shoulder to Reid two years ago, when his son Garrett died of a drug overdose.
"You guys know how proud I am of him for the man that he is and the things that he's done to change things around and kind of bounce back," Reid said. "You never slight Michael Vick."
Even at the age of 34, when most running quarterbacks have started to slow down.
"He's going to be 50 years old and still be the fastest guy on the field," Reid added.
Vick will certainly face a stiff challenge in the Chiefs (4-3), who have the NFL's third-ranked defense and the best against the pass.
Kansas City is coming off a 34-7 rout of St. Louis, a game that was so lopsided that its backup defense played most of the fourth quarter.
The Jets (1-7) counter with the league's fourth-ranked rushing offense, which should be bolstered by Vick's mobility. But with a pass offense that is last in the NFL, Vick's ability to connect with wide receivers downfield — and back the Chiefs off the line of scrimmage — could be crucial.
By the way, that defense is coordinated by Bob Sutton, who spent 13 seasons as an assistant with the Jets. In many ways, it mirrors what Rex Ryan does with his own defense.
"There are a lot of similarities on both sides of the ball," Ryan said. "We probably know each other well, it's just a matter of going out and seeing who can out-execute who."
WHAT ABOUT GENO: Vick has only been appointed starter on a game-by-game basis, and Ryan hasn't ruled out going back to Geno Smith. "Whenever I get a shot to play, obviously I have to do better than I have done previously," Smith said. "I'm going to take it with the same mindset that I have always had, be confident, go out there and play the game."
SPEAKING OF QBS: Chiefs quarterback Alex Smith practiced all week after spraining his throwing shoulder before halftime last week against St. Louis. He still finished the game, going 24 of 28 for 226 yards. "I was a little sore," Smith acknowledged, "but I felt 100 percent, and felt like I could do everything that I needed to do."
SACK CITY: Both teams have 24 sacks, tied for fourth-most in the league. The Jets are led by Muhammad Wilkerson, Calvin Pace and Sheldon Richardson, who played college ball at Missouri. The Chiefs are led by Tamba Hali and Justin Houston, who had three sacks last week and has a league-leading 10 on the season. "Houston is a great player," Ryan said. "There's no doubt."
SPECIAL DELIVERY: Chiefs running back Knile Davis returned a kick 99 yards for a touchdown against the Rams last weekend. It was the second kickoff return of his career. "He's blessed with great speed along with that size," Reid said. "He's taking great pride in this."
TURNOVER TROUBLE: The Jets have only forced three turnovers, putting them on pace to break the NFL record for fewest in a season of 12. "I've been a part of a lot of record-setting defenses, but I never thought I would set one in futility," Ryan said. "Thank goodness the year isn't over. I bet we won't be there. I bet we won't break that record."
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