Career stats: 14.6 PPG, 8.4 RPG, 1.2 BPG
Years active: 1989-2003
Substance(s) involved: Cocaine, Alcohol

The Reign Man may have made it to six NBA All-Star games during his 14-year career, but the thing that many fans will remember about him the most is the fact that he could've done so much more. Kemp was the type of player who always made great things happen solely on the strength of his athletic ability, and even when his weight ballooned to over 300 lbs during his time with the Cleveland Cavaliers, he was still able to put up better numbers than most power forwards and centers in the league. 

However, when Kemp got to Portland in 2000, things only went from bad to worse. He began abusing cocaine and alcohol during the lockout of 1999 and saw his numbers dip from 17.5 PPG in Cleveland to just 6.5 PPG during his first year with the Trailblazers. Ultimately, Kemp's career would never recover, and the greatest in-game dunker—once thought to be a lock for the Hall of Fame—spent the last of his playing days attempting one failed comeback after another.