Tom Thibodeau’s departure from New York marked the fifth coaching firing of the season. However, he joins Mike Brown (Sacramento Kings), Michael Malone (Denver Nuggets) and Taylor Jenkins (Memphis Grizzlies) as the fourth unanticipated firing that continues to highlight the harsh reality of being an NBA coach. “It is not an easy job,” Detroit Pistons coach J.B. Bickerstaff said on ESPN’s First Take Wednesday morning. “Every year, we sit down with our front office, and we lay out a plan on what a successful season looks like. … We have to do more. We have to overachieve in order to progress and move forward.”