More than 20 years later, Leonhard has returned to the place where his professional life began, taking over as the Bills' defensive coordinator. Bills defensive coordinator Jim Leonhard visits with players during day two of Buffalo Bills training camp at St. John Fisher University Thursday, July 30, 2026 in Pittsford. Sep 14, 2025; East Rutherford, New Jersey, USA; Buffalo Bills linebacker Keonta Jenkins (49) after the game against the New York Jets at MetLife Stadium. Jul 29, 2026; Rochester, NY, USA; Buffalo Bills defensive back Kani Walker (41) runs a drill during training camp at St. John Fisher University. — Sign up for OnSI’s Free Buffalo Bills Newsletter —