Westbrook scored 26 points and Durant had 24 for the Thunder, who broke a two-game losing streak.
Serge Ibaka played a key role in the win with 15 points and 20 rebounds.
The Bucks dropped a fifth straight with O.J. Mayo's 22 points the best they could muster.
Astronomers offer more expansive view of universe
Attkisson leaves CBS News, reportedly over network's 'liberal bias'