Then, the ejections came.
Raptors star guard duo Kyle Lowry and DeMar DeRozan were both sent for an early shower - Lowry for picking up six fouls and DeRozan for two technicals.
They were soon followed by forward Serge Ibaka and head coach Dwayne Casey (two technicals each) as the Raptors capitulated.
Adams was immense throughout the contest, leading the team in scoring until Westbrook went on a one-man crusade in the fourth quarter.
The big Kiwi shot an efficient 10-13 from the floor and tied his career high in assists (4).
With the win, the Thunder moved to just one game back from the West's current third seed Portland Trailblazers.
They'll now get a day off before hosting the East's No.2 seeded Boston Celtics on Wednesday (NZT).