David Duke Jr. G 1 Oct Day-To-Day 26 Jul: The Spurs signed Duke (undisclosed) to a two-way contract Friday, Adrian Wojnarowski of ESPN reports. Sidy Cissoko G 1 Oct Day-To-Day 22 Jul: Cissoko isn’t listed on the active roster for Sunday’s Summer League finale against the Raptors for an undisclosed reason, Paul Garcia of ProjectSpurs.com reports. Charles Bassey C 1 Oct Day-To-Day 17 Jul: The Spurs signed Bassey (knee) to a one-year, $2.2 million contract Tuesday, Shams Charania of The Athletic reports. Stephon Castle G 7 Oct Day-To-Day 15 Jul: Castle suffered a right wrist sprain during Saturday’s win over Portland and is out for the remainder of Summer League, Tom Orsborn of the San Antonio Express-News reports. Zach Collins PF 1 Oct Day-To-Day 20 Apr: Collins suffered a torn labrum in the season finale against the Pistons on April 14 and will undergo surgery in the offseason, Nick Moyle of The San Antonio Express News reports. Devin Vassell SG 1 Oct Day-To-Day 15 Apr: Vassell will be shut down for the remainder of the campaign due to a stress reaction in his right foot, Dan Weiss of Bally Sports San Antonio reports. Keldon Johnson SF 1 Oct Day-To-Day 15 Apr: Johnson (ankle) anticipates needing “about another week” prior to being able to consistently partake in workout activities, Jeff Garcia of KENS 5 San Antonio reports. Malaki Branham G 1 Oct Day-To-Day 15 Apr: Branham (concussion) is out for Sunday’s game against the Pistons, Paul Garcia of ProjectSpurs.com reports.