He was working on his game in SDSU J.A.M Center during two months while still rehabilitating the injury. In fact, he was with his trainner Randy Shelton all summer, even in his trip to China.
When training camp opened doctors re-evaluated his quad and found it wasn't fine.
Also, Kawhi didn't expected the bad news, since he told his sister he would miss just one week of training camp
https://www.instagram.com/p/BZ1jNUsH...fficialfanpage
But it seemed like the RMI showed it worse than him and the team thought.