Longtime Assistant Joe Holladay on Roy Williams: 'He is One of a Kind' Posted Apr 3, 2021 Former UNC assistant coach Joe Holladay was emotional when he spoke. His eyes welled with tears at the first mention of Roy Williams' name and his decision to retire. "I was surprised but happy for him," Holladay said when Williams told him he was retiring. Holladay spoke about how Williams treated people and how loyal he was to those close to him. (Inside Carolina)