The are set to embark on their first preseason game under head coach Jim Harbaugh. The team has had a productive training camp and many of the roster spots on this team are already set, but there will still be plenty to be decided in the preseason.Looking at the current 90-man roster, 35 players can safely be put on the 53 Boston Red Sox Blank Jersey -man roster, in all likelihood. That leaves 18 spots still to be decided. That could be a bit of a bold prediction, but considering how Jim Harbaugh will build this team, I like their chances.If these 35 players are locks to make the roster, where does the remainder of the final 53-man squad come from?35 Chargers who are locks to make final rosterQuarterbackJustin HerbertThe only QB who is safe is Justin Herbert. Easton Stick likely makes it as his backup, but he will have to fend off Max Duggan and the newly signed Luis Perez.Running backGus Edwards, J.K. DobbinsThe Chargers Mookie Betts Jersey almost certainly won't cut sixth-round pick Kimani Vidal, but is there a chance they could keep Jaret Patterson and/or Isaiah Spiller over him? Sure. It's a very small chance, though.Wide receiverJoshua Palmer, Ladd McConkey, D.J. Chark, Quentin JohnstonTight endWill Di sly, Hayden HurstThere may not be a clear starter between these two right now, but they'll both make the team.Offensive lineRashawn Slater, Zion Johnson, Trey Pipkins, Joe Alt, Jamaree SalyerBradley Bozeman will almost certainly be the starting center, but there is still a Collin McHugh Jersey chance someone takes his job.Defensive lineMorgan Fox, Justin Eboigbe, Poona FordThis might be the toughest position group to predict and there may not be many sure things. Justin Eboigbe, taken in the fourth round, likely won't be a starter but he's definitely making the team.Edge rusherJoey Bosa, Khalil Mack, Tuli Tuipolotu, Bud DupreeThis is pretty self-explanatory and seems easy to envision. The Steven Wright Jersey Chargers have a chance to have one of the best pa s-rushing groups in the league with this quartet.Inside linebackerJunior Colson, Daiyan Henley, Denzel PerrymanIt's tempting to put Troy Dye here as well and he will most likely make the team, but he still has to hold off some guys before that is realized.CornerbackAsante Samuel Jr., Kristian Fulton, Cam Hart, Tarheeb Still, Ja'Sir TaylorThis is a good, young group. Kristian Fulton has solidified himself as a starter with a .SafetyDerwin James, Alohi Gilman, A.J. FinleyThe starters are clear. A.J. Finley should easily make the team as well.SpecialistsCameron Dicker, J.K. Scott, Josh HarrisThere is no other competition for any of these positions, so this Ted Williams Jersey will be your kicker, punter and long snapper this season.MORE CHARGERS NEWS