Bills' Kolb injures left knee during practice
Update 10:47 am ET
The injury is not believed to be serious according to Mark Gaughan of the Buffalo News.
Kevin Kolb tweaked his knee - he's going to be day to day, said D Marrone. Not serious but lots more reps for EJ coming up.— Mark Gaughan (@gggaughan) August 3, 2013
Bills Quarterback Kevin Kolb was helped into the locker room after slipping on a rubber mat and hurting his left knee, according to the Associated Press.
Kolb was coming off the field when he slipped on a wet rubber mat. The AP reports Kolb didn't fall, but he was unable to stand without putting his arm around the shoulder of trainer Bud Carpenter.
Kolb is competing for the starting job in Buffalo with rookie first round pick E.J Manuel.