Duke (undisclosed) isn't on the list of inactive players for Thursday's preseason game versus the Rockets, Jeff McDonald of the San Antonio Express-News reports.

Duke (undisclosed) has been ruled out for Tuesday's preseason game against the Heat, Paul Garcia of ProjectSpurs.com reports.

Duke (undisclosed) won't play in Saturday's preseason game versus the Jazz, Paul Garcia of ProjectSpurs.com reports.

Duke (undisclosed) won't play in Wednesday's preseason game against the Magic, Michael C. Wright of ESPN.com reports.

Duke (undisclosed) has been ruled out for Monday's preseason opener against the Thunder, Paul Garcia of ProjectSpurs.com reports.

The Spurs signed Duke (undisclosed) to a two-way contract Friday, Adrian Wojnarowski of ESPN reports.

The Spurs renounced their free agent rights on Duke (ankle) on Monday, Keith Smith of Spotrac.com reports.

Duke will miss Sunday's Summer League game against the Kings due to an undisclosed minor injury, Jeff McDonald of the San Antonio Express-News reports.

San Antonio extended Duke a qualifying offer Sunday, Jeff Garcia of KENS 5 San Antonio reports.

The Spurs signed Duke to a two-way contract Thursday, Adrian Wojnarowski of ESPN reports.