Bills coach Sean McDermott feels invigorated in doubling up as defensive coordinator
Bills HC McDermott Calls Out Mistakes in Vikings Loss
10 NFL playoff teams are integrating new play-callers, either out of need or to add a spark for 2023 - ABC News
Sean McDermott News: Bills Coach Says It 'Feels Natural' To Call Bills' Defensive Plays
Sean McDermott on the spot as Bills' defensive play-caller
McDermott excited to build closer relationships with players
Bills HC Sean McDermott talks taking over defensive play-calling duties: 'I'm excited about doing it'
Sean McDermott still working through process after taking over defensive play calling - NBC Sports
Bills' McDermott expects to fill in calling defensive plays