During training camp he suffered hamstring and concussion injuries that limited his playing time .
On August 28 , 2014 , it was announced that Hamilton would be suspended for four games after he missed a drug test in the offseason .
During training camp Hamilton suffered hamstring and concussion injuries that limited Hamilton 's playing time .
On August 28 , 2014 , it was announced that Hamilton would be suspended for four games after he missed a drug test in the offseason .