Jameer Nelson (born February 9, 1982 in Chester, Pennsylvania) was signed by the Dallas Mavericks as a free agent on June 24, 2014.
Nelson, who led his high school team to the Class 4-A Pennsylvania State Championship, was heavily recruited and chose to play his college ball at St. Joseph's University. His breakout year came as a junior when he averaged 19.7 points, 5.1 rebounds and 4.7 assists. Following the season, he initially declared as an early-entry candidate for the NBA Draft, but changed his mind and elected to play his senior year at St. Josephs.
It proved to be a very successful decision as Nelson led the team to a 27-0 regular season record. Averaging 20.6 points, 5.3 assists and 2.9 steals per game, he teamed with another future Maverick (Delonte West), to form one of the best backcourts in the nation. They led the St Joseph's to the Elite Eight of the NCAA Basketball Tournament. Nelson left as the schools all-time leader in scoring, assists and steals. His number was later retired by St. Joseph's in a ceremony on April 23, 2004.
The 6'0 guard was selected in the first round (20th overall) of the 2004 NBA Draft by the Denver Nuggets but traded later on draft night to the Orlando Magic in return for a 2005 first round draft pick. Seeing action that first season mostly in a backup role, Nelson still managed to averaged 8.7 points and 3.0 assists while being named to the NBA's All-Rookie Second Team.
Playing for the Magic for the next nine seasons, Nelson led Orlando to the playoffs six of those years and was named to the NBA All-Star Game in 2009. His best season came in 2008-2009 when, despite being limited to 42 games by a torn labrum in his right shoulder, he averaged 16.7 points.
The Magic released Nelson, after ten seasons, on June 30, 2014. He signed as a free agent with Dallas on July 24, 2014 and began a season that would lead him on quite the cross-country journey. With the Mavericks, he saw action in 23 games while averaging 7.3 points and 4.1 assists.
On December 18, 2014, the Mavs traded Nelson, along with Brandan Wright, Jae Crowder a 12.9 million-dollar trade exception and a 2016 second round draft pick to the Boston Celtics in return for guard Rajon Rondo and center Dwight Powell.
Nelson's stay in Boston lasted exactly 26 days ( 6 games, 4.8 ppg and 5.5 apg) when on January 13, 2015, he was traded to the Denver Nuggets in return for guard Nate Robinson.