The Dallas Mavericks were desperate to make it to the playoffs in 2001. When Dirk Nowitzki, Steve Nash, and Michael Finley gave the Mavs a big three. They also made a new addition in form of assistant coach Del Harris. Thereafter Mavs were on fire in the six years Harris was on staff, Mavericks made it to all the playoffs and won the Western Conference as well in his final year, Coaches like Don Nelson to Avery Johnson came and went. Harris was bestowed with 2020 Lifetime Achievement Award. Harris pulled off an impressive record of .549 winning percentage in NBA over his 1,013 games as a Head Coach.