 Nyora kupfuurira kweiyi ndima - Mushure mekusaenda kunyorwa mu2016 NBA draft, Forbes akabatana neSan Antonio Spurs ye2016 NBA Summer League. Vachipinda muSummer League, murairidzi mukuru weSpurs Gregg Popovich akaudza Forbes kuti apfure mushure mekunge aita 77-ye100 matatu-pointers pane imwe yeNBA pre-draft workouts. Musi waChikunguru 14, 2016, akasaina neSpurs. Forbes akawana nzvimbo yokutanga-usiku roster pashure pokuorora Spurs mukati memusasa wokurovedza uye mwaka wokutanga. Forbes akatamba zvishoma neSpurs mumwaka wake wese wekutanga, achipedza yakawanda yenguva yake muNBA Development League pabasa neAustin Spurs. Musi waApril 7, 2017, naTony Parker, Manu Ginóbili naKawhi Leonard vasina kutamba, Forbes akawana basa-rakakwirira 27 mapoinzi kutungamira Spurs kuhwina 102 89 kukunda Dallas Mavericks. Forbes, uyo aive nemapoinzi makumi matanhatu nematanhatu mumwaka nemutambo wakakwira masere achiuya, akaenda 4 kubva pa9 kubva pamapoinzi matatu uye zvakare aive nemabasa epamusoro mumaminetsi 29 uye anobatsira matanhatu. 