The Detroit Pistons have started Phase 1 of their workouts featuring 15 players, including 5 G League players.

Blake Griffin and Derrick Rose are not in attendance, though Dwane Casey added that both players are working out in other locations.

"All of our young guys are here. Derrick Rose and Blake are not here, which is totally understandable. Both are working out, and it's nothing physical. They're both 100 percent," said Casey.

Christian Wood and Langston Galloway are also not participating due to their free agency status.

"We're not reading anything into that either way. So it's just something I totally get because if I'm a free agent, I wouldn't attend anyway to the team you're not under contract with," said Casey of Wood and Galloway.

Phase 2 of the voluntary workouts will begin next week through October 6th for the eight NBA teams that didn't participate in the bubble.