What happened: Dallas announced the jersey change alongside Marshall's contract extension. He previously wore No. 13.
Why it matters: The three-year extension replaces a deal that was due to expire after 2026-27. Marshall enters the agreement after a career statistical season in 2025-26.
By the numbers: Marshall averaged career highs of 15.2 points and 3.3 assists across 74 games in 2025-26, adding 4.7 rebounds and 1.1 steals per game.
What to watch: Training camp will offer the first indication of Marshall's role for 2026-27.