Coach Trees / Coaching Pedigrees - Searching the relationships between coaches
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Coach Trees was founded in 2009 with the intent of using software to document the relationships between coaches.
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Current selected organization: Buffalo Bills
Organization Active years

Number of head coaches 17
Total number of coaches 168
Average Tenure 3.60 years

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Buster Ramsey                                                      
Lou Saban                                               
Joe Collier                                                     
Harvey Johnson                                                      
John Rauch                                                      
Jim Ringo                                                      
Chuck Knox                                                   
Kay Stephenson                                                     
Hank Bullough                                                      
Marv Levy                                            
Wade Phillips                                                     
Gregg Williams                                                     
Mike Mularkey                                                      
Dick Jauron                                                    
Perry Fewell                                                       
Chan Gailey                                                     
Rex Ryan                                                       

CoachPosition
Marv Levy Head Coach
Chuck Lester Defensive Assistant
Rusty Jones Strength and Conditioning
Ted Tollner Wide Receivers
Bruce DeHaven Special Teams
Walt Corey Defensive Coordinator/Linebackers
Ted Cottrell Defensive Line
Chuck Dickerson Administrative Assistant To The Head Coach
Ted Marchibroda Quarterbacks
Elijah Pitts Running Backs
Jim Ringo Offensive Coordinator
Dick Roach Defensive Backs