4. Richard Jefferson
During the time in between the Dallas Mavericks winning the NBA Finals in 2011 and them drafting Luka Doncic in 2018, there have been plenty of forgotten role players who had short stints in Dallas that are easily forgotten.
Richard Jefferson is one of those players.
Before signing with the Dallas Mavericks in the 2014 offseason, Jefferson averaged 14.5 points, 4.5 rebounds, 2.4 assists, and 0.7 steals per game. He was a solid role player for the New Jersey Nets and Milwaukee Bucks, with one of his best seasons coming in 2007-08 with the Nets.
He averaged 22.6 points, 4.2 rebounds, and 3.1 assists per game while shooting 46.6 percent from the field. By the time Jefferson got to Dallas, he was 34 years old and not playing anywhere close to the level he was in New Jersey.
Jefferson had a decent season in Dallas, as he averaged 5.8 points and 2.5 rebounds per game off the bench, but his game had declined sharply since the previous year. He was only playing 16.8 minutes per game, and his game was showing signs of wear.
After leaving Dallas, Jefferson played two seasons in the NBA with the Cleveland Cavaliers, winning the NBA Finals in 2016. After playing in Cleveland, he finished his career off playing for the Denver Nuggets.