A week after losing by 38 points to the Detroit Lions, the St. Louis Rams used their defense to rebound in a big way. The Rams' defense sacked San Diego's Philip Rivers seven times to set the tone, stuffing the NFL's top offense in a 20-17 victory over the Chargers on Sunday. James Hall, Chris Long and Larry Grant had two sacks apiece for surprising St. Louis (3-3), which won only one game last season. "We thought we could get pressure. We might have exceeded our expectations," Long said. "You have to aim high." Sam Bradford threw a 38-yard touchdown pass to fellow rookie Danario Alexander, making his NFL debut, to help build a 14-point cushion in the first half. Bradford finished 18 of 31 for 198 yards. http://scores.espn.go.com/nfl/recap?gameId=301017014