Download the app.
Find what channel Spurs are being shown on somewhere in the world. Fox Sports / ESPN or some shit. Google is your friend here.
Type that in the search bar (Top left corner of the app) AKA "Fox"... It will come up with the channels, Fox Sports 1, 2 etc.
Press the channel we are on, and bobs your uncle. Only used it a couple of times, but has worked fine for both.
Thank you honeybear