Below is how the Irish defensive coaching staff stacks up. Each coach is ranked on a five-star scale.
Bob Diaco, Defensive Coordinator/Inside Linebacks Coach — Two Stars
The soon-to-be 37-year-old Diaco may have the biggest task of all in sorting out a Notre Dame defense that was ranked No. 86 in the country last season.
After spending a season under Kelly at Central Michigan, Diaco worked the defensive sidelines at the University of Virginia before rejoining Kelly last season as Cincinnati’s defensive coordinator.
He will likely be under heavy scrutiny, as Kelly defenses historically have yielded many points thanks to his quick-strike offensive philosophy (Kelly’s 2009 Bearcats were last in the country in time of possession, but were first in total points scored).
Diaco will implement the 3-4 defense in South Bend, and it will be interesting to see if he can handle the burden placed on him by Kelly’s offense. He tends to be a poor interviewer, and may have a hard time explaining lackluster defensive performances to Irish Nation.
Chuck Martin, Defensive Backs Coach — Four Stars
Kelly failed to persuade Martin to leave Division 2-powerhouse Grand Valley State University at his previous two coaching stops, but this time the allure of Notre Dame was enough to get him.
Martin served as defensive coordinator under Kelly at GVSU before taking over the reigns upon Kelly’s departure to Central Michigan. In his time as head coach, Martin led Grand Valley to three National Championship games, and won two of them. The Lakers never finished outside of the top 10 under his control.
He is a natural leader with a lot of charisma and should be a great asset on the recruiting trail. While Martin’s main role will be coaching the defensive backs, it is possible he will have some influence on schemes and play calling.
If for some reason Diaco cannot turn around the Irish defense, expect Martin to be next in line.
Mike Elston, Defensive Line Coach and Special Teams Coordinator — Five Starts
Elston is the gem of Kelly’s staff, and he brings a lot to the table for the Irish. He served as an assistant head coach under Kelly at Cincinnati, and was the recruiting coordinator for the Bearcats in 2007 and 2008.
He was responsible for keeping Charlie Weis’ recruits on board during the coaching transition.
This guy can do it all, and he does it all very well. At both Central Michigan and Cincinnati, Elston commanded stellar special teams squads and should being the same expertise to South Bend.
Much like Martin, Elston could be plucked from the ranks if this staff finds success.
Kerry Cooks, Outside Linebackers Coach — Three Stars
After spending the last three seasons as Wisconsin’s defensive backs coach, Cooks is another up-and-comer on the Irish staff worth keeping an eye on.
Cooks will be responsible for grooming Manti Te’o, one of the most talented linebackers in college football, for the next three seasons. Although inexperienced, Cooks should have great chemistry with Diaco, a college teammate of Cooks at the University of Iowa.
It is likely he will be assisted some by Elston, who oversaw the linebackers for Kelly at both Central Michigan and Cincinnati.
Paul Longo, Strength and Conditioning Coach — Five Stars
Longo brings 18 years of strength and conditioning experience at the Division 1 level to the Irish program. He has already developed a reputation after making several players vomit during the opening stretches of offseason workouts.
He announced an ambitious plan to ensure every Notre Dame offensive lineman with have 18 percent or less body fat composition.
The peak physical fitness of Longo’s teams has led to an amazing 42-1 record over the last five seasons when leading after 3 quarters.