The Boston Celtics, by force, remade their frontcourt. That includes significant changes at the four and the five. Gone are Al Horford, Kristaps Porzingis, and Luke Kornet. They can turn to their wings and ask them to bump up a position. However, the more traditional options they will lean on are Neemias Queta, Luka Garza, Xavier Tillman Sr., and Chris Boucher.
It helps to have an option within that group who can comfortably operate as a standalone center or in double-big lineups. That individual is one of the team's returning players, Xavier Tillman Sr.
Still, he too must acclimate.