Absent from the workout will be Paul George, who has been in Spain on a vacation that was planned before his trade to the Thunder. ESPN earlier reported that George would be back in time to participate.
The workouts will run through Thursday and will mainly consist of informal drills and conditioning, led by the players.
It's an annual summer event for Thunder players to gather for a workout in the Los Angeles area, started by Westbrook, Kevin Durant and Serge Ibaka. As the only member of that trio remaining on the team, Westbrook has continued the tradition.