4. Kurt Thomas
Kurt Thomas earns his spot on this list for almost identical reasons as Rasho Nesterovic. San Antonio cycled through countless starting centers in the 2000s, and they pulled the trigger on a deadline deal that sent Brent Barry, Francisco Elson, and a first-round pick to the Sonics for the established veteran in one of the most lopsided trades ever orchestrated by then-General Manager R.C. Buford.
The 35-year-old was supposed to be an immediate upgrade over Fabricio Oberto. Unfortunately, that never came to fruition. Thomas never found a way to be effective enough on either end of the floor to permanently supplant the Argentinian in the starting lineup for more than a game here or there, which made handing him $12.3 million for one-and-a-half seasons of low-grade play tough to swallow.