We discuss two more top-ranked active NBA head coaches: Greg Popovich of the San Antonio Spurs and Nick Nurse of the Toronto Raptors. Popovich has won five championships spanning four decades and is the longest reigning active head coach. Nick Nurse, as a head coach, has won championships in UK, Belgium, NBA D-League, and most recently in 2020, brought the Toronto Raptors their first ever championship in Raptors' franchise history in only his first year as a head coach in the NBA.