E’Twaun Moore scored a three-pointer to put the Bulls ahead with 2.1 seconds left, and the Thunder could not muster a reply as Tom Thibodeau’s side further strengthened their position at the top of the Central Division standings.
Serge Ibaka played second fiddle to Westbrook’s mammoth score but nevertheless contributed 25 points and nine rebounds, while Nikola Mirotic was Chicago’s leading scorer with 26.
Northwest Division leaders the Portland Trail Blazers secured a fifth consecutive victory by comfortably downing the Dallas Mavericks 95-74.
A strong second-half display was key to the Trail Blazers’ win, as was 17 points and 12 rebounds from LaMarcus Aldridge and 15 points and a season-high 12 rebounds from Nicolas Batum.
No Dallas player could better Aldridge’s and Batum’s hauls, with Monta Ellis and Amar’e Stoudemire each scoring 12 points.