What happened: The Boston Celtics will feature the number 13 on the court next season under the "Trece" moniker. This jersey assignment follows the recent addition of a nine-time All-Star boasting six All-NBA selections and four All-Defensive Team honors.

Why it matters: Integrating a former steals leader and 2016 Olympic Gold Medalist provides an immediate two-way upgrade for the 2026-27 campaign. The move is expected to shift starting lineup dynamics as the organization targets a deep Eastern Conference playoff run.

What to watch: The coaching staff will begin integrating the newly formed roster once training camp begins.