The Spurs moved quickly when the NBA?s free-agent signing period began Wednesday, signing point guard Jacque Vaughn and extending offer sheets to centers Francisco Elson and Jackie Butler.

Elson and Butler are restricted free agents, so Denver and New York have seven days to match the offers. The Knicks have already indicated they want to keep Butler.

The Spurs extended offers to both Elson and Butler in part because they were unable to reach agreement with former second-round pick Robertas Javtokas. Javtokas is preparing to play in Greece, but the Spurs haven?t given up hope they will be able to resume negotiations with him, if needed.

Vaughn, who signed a one-year contract for the league minimum, will compete with Beno Udrih for the backup point-guard job.