San Antonio ? The San Antonio Spurs traded forward Eric Williams and a draft pick to the Charlotte Bobcats for forward-center Melvin Ely in an exchange of veteran backups.

The Spurs said Tuesday that the draft pick is a second-round selection in 2009.

The 6-foot-10 Ely has averaged 2.9 points and 1.6 rebounds in 24 games for Charlotte this season. Ely is in his fifth NBA season, including two seasons with the Los Angeles Clippers.

Ely, who had asked to be traded in late December, had played little in Charlotte after signing a one-year, $3 million qualifying offer before the start of training camp.

The 6-8 Williams has averaged 2.6 points in 16 games this season, his 12th in the NBA. The Spurs traded center Rasho Nesterovic and cash to the Toronto Raptors last summer for forwards Williams and Matt Bonner and a second-round pick in 2009.

The Bobcats will be the seventh team for Williams, and his sixth in four seasons.