7. Isaiah Thomas
Isaiah Thomas had an underrated NBA career, and he had the chance to be one of the stars of the league if it wasn't for injuries. Thomas entered the league in 2011, and he retired after the 2021-22 season.
Despite playing 11 seasons in the NBA, Thomas only played in 550 games. His best season came in 2017, as he was considered for the NBA MVP, but after that, he never replicated that production.
After leaving Boston, Thomas played for seven different teams, and one of those teams happened to be the Mavs. Thomas signed a 10-day contract with the Mavs back in 2021, and he only played in one game for the Mavs. In that one game, Thomas played 13 minutes, scored six points, and dished out four assists.
Thomas' one game was the only action that Mavs fans got to see from him, as he was placed in the league's COVID-19 health and safety protocols and not re-signed.
Thomas' story is much more than injuries and 10-day contracts, as he went from being the last pick of the 2011 NBA Draft to a star point guard, but Mavs fans never got to see that star ability.
Thomas retired later that season after signing with the Charlotte Hornets. He played 17 games for the Hornets and averaged 8.3 points per game.