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This will conclude our "3 unanswered questions before training camp" series.
We have worked our way through all 32 teams.
It has been a blast analyzing what plagues NFL franchises coming into camp.
For our final act, we look at the Los Angeles Chargers , who hit a wall down the stretch with injuries last season.
This season, they are projected to finish tied for second place in the AFC West.
Justin Herbert may be the best quarterback in the NFL not to win a playoff game.
In his six seasons, Herbert is 52-43 in regular-season games with a passer rating of 96.3.
The playoffs have been where he struggles, going 0-3 with a passer rating of 64.7.
Will this be the season that he gets over the hump? Most quarterbacks have hit their stride after year five.
How Jim Harbaugh and Mike McDaniel coexist will be interesting.
Harbaugh is a run-first coach, and now has McDaniel, who likes to spread the ball around.
McDaniel always requires speed on the offense, and that was addressed in this year's NFL Draft.
How the Chargers want to play will show early in camp.
How productive will the Chargers' pass rush be? Khalil Mack will be entering his 13th season, and the team let Odafe Oweh walk.
Oweh was extremely productive after coming over mid-season.
Mack can still be productive, but how productive will be the question.
This article originally appeared on Touchdown Wire: 3 unanswered questions before camp: Los Angeles Chargers edition.