Markieff Morris scored 21 points in a nearly wire-to-wire win for the rising Suns over one of the elite squads in the NBA.
Channing Frye added 17 points to the Suns score sheet and Ish Smith scored 15. The Phoenix bench outscored the Spurs reserves 60-34.
Phoenix won its third game in a row and closed out San Antonio's three-game winning string.
The Spurs as a team shot 34.9 percent from the field and hit just 2-of-21 from 3-point range.