The Thunder are very serious about a championship next season, and are already holding unofficial preparations. According to NewsOK, ten of the Thunder's 14 active roster players gathered in Los Angeles for a voluntary workout. The workout is started on July 21st and is expected to continue through July 22nd or 23rd. Reportedly, there are "a load of teammates and support staff" helping the workouts along. Back on July 20th, KD and Westbrook went through a day of drills in front of Coach Donovan.
It's worth noting that this is the first practice for Cameron Payne with the rest of the team.