Worst Starter No. 8 – Shawn Marion
One of the best overall careers on this list (perhaps the best) belonged to Shawn Marion. “The Matrix” was a four-time All-Star, two-time All-NBA selection and won a title with the Dallas Mavericks in 2011. He joined the Cavaliers for the 2014-15 season as a free agent to try and help Cleveland win a title.
Things did not go super well. His declining athleticism limited his ability to score, and he was never a knockdown shooter. He scored just 4.8 points per game overall for the Cavaliers and 5.3 points in games that he started. He played competent defense, but on offense, he had very little left to give.
Marion shot 42.1 percent from the field in his 24 starts for the Cavs that season and a chilly 27.3 percent from 3-point range. He had just about as many turnovers as assists (21 to 23). By the playoffs Marion wasn’t just demoted from the starting lineup, he was on the fringes of the rotation itself, playing just 25 minutes total in their run to the NBA Finals. He retired after that year.