The No. 4 overall pick out of UCLA performed well in the Orlando summer league after averaging 12.7 points, 4.3 assists and 1.6 steals for the Bruins last season.
The UCLA product averaged a career-best 6.8 assists in his first opportunity to be a full-time starter, but Westbrook is the point guard of the future.
The Thunder traded for the All-Pac 10 defensive guard from Washington State who was selected in the second round in this year's draft.
The NBA's Rookie of the Year averaged 20.3 points and 4.4 rebounds and is the organization's foundation, a potential perennial All-Star.
The former OSU star returns to the Ford Center after playing two seasons with the Hornets. An athletically gifted veteran, Mason provides depth and leadership.
The Georgia product averaged 9.2 points and 3.2 rebounds, but this time will have to battle for major minutes.
: The former Kansas star nearly averaged a double-double (9.