One of main reasons the Chargers struggled in 2012 was the offensive line. The unit allowed 49 sacks last year, which was fourth-most in the NFL.
One of the reasons San Diego has a winning record and Rivers is playing so well is the offensive line. Rivers has been hit a league-low 18 times in 2013.
Rookie tackle D.J. Fluker struggled early, but eventually adjusted to the NFL and has played exceptionally well. Against Jacksonville Fluker was asked to move from right tackle to left tackle, a move far more difficult than moving from left to right tackle, as the top two draft picks (Eric Fisher in Kansas City and Luke Joeckle in Jacksonville) had to do. Fluker played so well he was named Rookie of the Week.
Jeromey Clary moved from right tackle to right guard. When he and Fluker double team a defender, there is a massive hole. His history at tackle has proved invaluable as linemates get injured and he is asked to go back to his old position.
Chad Rinehart was brought in to man the left guard spot, but he has an injured toe and has not played since Week 3.
King Dunlap was signed in free agency to be the starting left tackle. He played fantastic when he was in, but has missed two-and-a-half games with concussions.
The steady presence of Nick Hardwick at center has helped this unit through shuffling lineups due to injuries. Hardwick is quietly having one of the best seasons in his 10-year career. He is the only person on the team to play every offensive snap.
Rich Ohrnberger is a reserve guard who had to start a game at left guard when Rinehart went down.
Johnnie Troutman started four games at left guard. He showed aggression pulling on run plays and good awareness on pass plays. He did have a sloppy game against the Colts, but this is basically his rookie season as he sat out all of 2012 with a pectoral injury.
Steve Schilling made an appearance in the Dallas game and was average. He is a useful reserve who can play multiple spots.
Undrafted free agent Nick Becton was inserted in the Raider game, and despite a penalty on his first professional play, he did a decent job.
Mike Remmers was on the field for four plays in Jacksonville before he injured his ankle.
The offense is fourth in the NFL, averaging 402.9 yards per game. While Rivers, Woodhead, Gates and the receivers deserve credit, none of it is possible without the guys up front handling business.