The Boston Celtics are making a major change to their starting lineup in a must-win Game 6 against the Philadelphia 76ers. Celtics' head coach Joe Mazzulla has decided to swap guard Derrick White with center Robert Williams. This move would bring Williams back into the All-Defensive Team starting center role he played last season. Injuries have limited his game time this season, resulting in him being used as a reserve. This matchup against the Sixers, who are led by MVP Joel Embiid and veteran point guard James Harden, could be a turning point for Williams to shine.

This sudden change by Mazzulla comes as no surprise to the Sixers, as they prepare for the unexpected at Wells Fargo Center. With Williams as their starting center, the Celtics have a better defensive stance in protecting the rim against Embiid's offensive prowess and Harden's pick-and-roll plays. Williams' strong presence on the perimeter and his ability to rebound and screen for the team make him an ideal candidate for starting in this crucial game, according to Mazzulla.

The Celtics' starting five has remained the same in all their postseason games so far, but with their backs against the wall, Mazzulla is looking for a spark to ignite his squad. It remains to be seen whether this change will work in the Celtics' favor and allow them to force a Game 7 or if the Sixers will secure their first Eastern Conference Finals appearance in over two decades.