Don Casey is a former basketball coach who had a long and successful career in the sport. He began his coaching career in the 1960s, working as an assistant coach at Temple University and later at the University of Pennsylvania. In the 1970s, he became the head coach at Temple, where he led the team to a 59-39 record over three seasons.

Casey then moved on to the NBA, where he worked as an assistant coach for several teams, including the Chicago Bulls, the Los Angeles Clippers, and the Boston Celtics. He was known for his defensive expertise and was credited with helping to develop some of the league's top defensive players.

In 1989, Casey was hired as the head coach of the Los Angeles Clippers. He led the team to a 31-51 record in his first season, but was fired after a disappointing start to his second season. He then spent several years as an assistant coach for the Seattle SuperSonics and the Boston Celtics.

In 1998, Casey was hired as the head coach of the Philadelphia 76ers. He led the team to a 21-31 record in his first season, but was fired midway through his second season after a 9-14 start.

Casey's final coaching job was as an assistant coach for the New Jersey Nets, where he worked from 2000 to 2008. He was part of the coaching staff that led the Nets to two NBA Finals appearances in 2002 and 2003.

Throughout his career, Casey was known for his defensive expertise and his ability to develop young players. He was also respected for his work ethic and his dedication to the sport. Despite never winning a championship as a head coach, he was widely regarded as one of the top defensive coaches in the NBA.

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