Saturday, a pair of undrafted rookie guards claimed the final spots on the opening-day roster. Forbes should help fortify depth at shooting guard, where the Spurs are set to start the season with starter Danny Green on the injured list. A 26-year-old point guard who has played professionally in Argentina, Lithuania and Spain, Laprovittola impressed with his command of the Spurs’ offense this preseason. In order to award roster spots to Forbes and Laprovittola, the Spurs had to waive four players – including one due guaranteed money. Livio Jean-Charles, the Spurs’ first-round pick in 2013, was on the cut list along with rookie campers Patricio Garino and Ryan Arcidiacono and veteran forward Joel Anthony. The Spurs can assign four of their camp cuts to their Development League affiliate in Austin, provided those players agree to a D-League contract.