3. Clyde Drexler
If there were an official list of the most underrated and forgotten careers in league history, Clyde Drexler would be at or near the top. He played 15 seasons, is 36th on the NBA's all-time scoring list, made 10 all-star games and came in at No. 53 when ESPN ranked the NBA 75th Anniversary Team.
Clyde averaged 20.7 points, 6.2 rebounds, 5.7 assists and 2.1 steals during his 11 full seasons in Portland. Eight of those all-star appearances came as a member of the Trail Blazers, and he was named to an all-NBA team four times, including a first-team all-NBA appearance in 1991-92. Lillard passed him on the franchise's all-time scoring list, but he's still at the top of numerous others.
Portland made the playoffs in all but two of Drexler's seasons and appeared in the NBA Finals twice. The Blazers have only made the conference finals three times since.
Clyde's PER of 21.3 probably doesn't do his Portland career justice.