1 player at each position that the Spurs should have kept around

Center - Rasho Nesterovic (2003-2006)

Rasho Nesterovic was a 1998 first-round pick by the Minnesota Timberwolves, whom he would play with until 2003. He started coming into his own in that season, which led to him being rewarded with a multi-year contract with the San Antonio Spurs.

In San Antonio, Nesterovic knew he was likely going to be placed alongside Tim Duncan as David Robinson was nearing retirement. The Slovenian big man understood his role and played it perfectly.
He was tough as nails, a force in the paint and he was smart with the basketball, always looking to make the right plays.

Nesterovic's best season has to be his first with the Spurs (2003–2004), which saw him average 10 points, 7 rebounds, and 2 blocks, which is a stat line he frequently posted. Nesterovic also played all 82 games and every playoff game that year, proving he was a true Iron Man.

Interestingly enough, Nesterovic was on the same 2004 Slovenian Olympic team as Udrih.

Nesterovic played a substantial role on a 2005 championship team that beat the Detroit Pistons four games to three. After a solid three-year stint with the Spurs, Nesterovic was traded to Toronto in 2006. In return, the Spurs received Matt Bonner and a 2009 second-round draft pick that was used to select DeJuan Blair.

Rasho Nesterovic was not the biggest name in the Spurs world. He wasn't close. But he was a valuable piece that the Spurs could have still gotten a lot more out of if he stayed longer.

Fans understand that it is a business at the end of the day, but the players mentioned in this list could have brought so much more to San Antonio if given the chance.