In perhaps the least discouraging downside of all time, the Celtics have made themselves one of the worst Summer League destinations imaginable by filling out their entire roster with defending champions before their games in Las Vegas even began.
When the dust settled and Xavier Tillman Sr. was inked to a two-year deal last week, the Celtics found themselves without any free two-way slots (welcome back to Drew Peterson and J.D. Davison, welcome to Anton Watson), and they have one free roster spot that they presumably will carry for a little while to maintain some modicum of flexibility.