Augustin played only four minutes before leaving Saturday's win over Washington after aggravating the injury that has plagued him for several days. An MRI Sunday revealed the strain, leaving the Bobcats without a key member of the rotation.
The ninth pick in June's draft, Augustin is averaging 12.1 points and 4.1 assists.
The Bobcats got better news on two other injured players.
Guard Raymond Felton, mentioned lately in trade talks, turned his right ankle Saturday. But Felton received treatment Sunday and isn't expected to miss any time.
Guard Matt Carroll missed Saturday's win with a sore right Achilles tendon. An MRI was negative and Carroll will be listed as day-to-day.