The San Francisco 49ers won their preseason battle with the Los Angles Chargers. Here's how PFF grades some of their best and worst performers.

Late in the fourth quarter, wide receiver Luke Grimm muffed the punt, and it was recovered by the 49ers at the Chargers' 24-yard line. Two plays later, quarterback Carter Bradley and wide receiver Terique Owens connected for a 22-yard touchdown.

The San Francisco 49ers will be playing their preseason finale against the Los Angeles Chargers on Saturday at Levi's Stadium.