A weekly look at what the San Diego Chargers must fix.

When the Chargers host the New York Jets on Sunday, they will face the No. 1 run defense in the NFL. The Jets are holding teams to just 63 rushing yards per contest.

While the Philip Rivers-led Chargers have not had a problem scoring points, through four weeks San Diego has been the worst running team statistically in the league, averaging just 2.4 yards per carry.

“It’s a good time to get the running game fixed,” said Chargers head coach Mike McCoy, when asked about facing a tough Jets defensive front.

That will be easier said than done for McCoy’s Chargers. San Diego’s offense has suffered more than we expected from the absence of running backs Ryan Mathews and Danny Woodhead in the last two weeks. Add to that the fact that San Diego played three different starting offensive line combinations in the last four weeks and you can understand why continuity is an issue.

There’s no quick fix to San Diego’s struggles running the football. The only way the Chargers will become more effective is to establish better chemistry and cohesion between running backs Donald Brown and Branden Oliver and the offensive line through repetition, and that takes time.

Offensive coordinator Frank Reich will continue to use the short passing game to create space for his running backs as the Chargers work on running the football better. And the expected return of Mathews from an MCL sprain in a couple of weeks also should help rectify the issue. Mathews ran for a career-high 1,255 yards last season and has a better feel for San Diego’s run scheme.

“We have plenty of talent here,” McCoy said. “We have plenty of talent to run the football. It’s not talent at all. It’s execution. We have to execute better.”