Gilbert Arenas
After his first three seasons, Arenas enjoyed a blistering three-year peak in which he averaged 27.7 points, 5.7 assists, 1.9 steals, and 2.6 threes per game while connecting from deep at a 36.1 percent clip. But with eight games remaining in 2006-07, he tore his MCL at the age of 25. After that, Agent 0 played in just 134 more NBA games, over a span of five seasons.