Westbrook takes over to lead the Thunder past Portland.
The Oklahoma City Thunder clinched the Northwest Division championship for a third straight year after a 106-90 win over the Portland Trail Blazers on Friday.
Russell Westbrook had a game-high 33 points to lead the Thunder on what was an unusually quiet night for Kevin Durant, who added just 16 points, with six assists and five rebounds.
Reggie Jackson had 17 points off the bench as OKC move 1 1/2 games ahead of the San Antonio Spurs in the race for the best record in the Western Conference.
Rookie Will Barton had a team-high 18 points for the Blazers who suffered their 10th straight defeat and their seventh straight at home, the latter being a franchise record.
Oklahoma host the Sacramento Kings on Monday looking to hold on to their advantage over the Spurs, while Portland visit the Denver Nuggets.