The Los Angeles Chargers have some brutally tough calls to make when final cuts for the 53-man roster arrive. Roughly one week into Chargers training camp, especially taking into account fully padded practices actually getting underway, some key battles have started to emerge. Think, some surprising, deep battles along the offensive line. Plus, some defensive spots up for grabs on a unit that is also undergoing a coordinator change. Here’s a quick rundown of an updated Chargers 53-man roster projection for this stretch of training camp. Chargers 53-man roster projection during training campQuarterbacks (2)Justin HerbertTrey LanceLook for the Chargers to likely attempt to keep DJ Uiagalelei in some fashion while rostering two. Running Backs (3)Omarion HamptonKeaton MitchellKimani VidalIt’s worth wondering if they keep four for the sake of a Jaret Patterson or Amar Johnson, but Kimani Vidal proved his worth last year as a three-down backup. Tight Ends/ Full Backs (4)Charlie KolarOronde Gadsden IIDavid NjokuAlec Ingold (Full back)The revamped room still appears to belong to Oronde Gadsden. But it’s pretty hard to ignore a possible David Njoku resurgence with Mike McDaniel calling the plays. Wide Receivers (5)Ladd McConkeyQuentin JohnstonTre' HarrisKeandre Lambert-SmithBrenen Thompson (R)Keandre Lambert-Smith, at this point, might be the guy most in danger here. The Chargers have some really interesting college free agents, past and present, in the form of names like Devonte Ross, Luke Grimm and Sincere Brown. Offensive Line (10)Rashawn SlaterJoe AltTyler BiadaszCole StrangeKayode OwosikaTrey PipkinsTrevor PenningJake Slaughter (R)Travis Burke (R)Branson TaylorTalk about a wild, unexpected turn. Rookie Jake Slaughter hasn’t taken the left guard job. So Kayode Owosika, Trey Pipkins, Branson Taylor and Trevor Penning have been in the mix getting work there, too. Good luck figuring out who wins the gig by the regular season, but those names being in the mix seem to almost assure their versatility and final roster spots. Teair Tart | IMAGN IMAGES via Reuters ConnectDefensive Line (5)Teair TartDalvin TomlinsonJamaree CaldwellJustin EboigbeNick Barrett (R)Dalvin Tomlinson was the big free-agent signing here, but it’s easy to forget the Chargers paid up big, smartly and early to keep Teair Tart in town. Edge Rushers (5)Khalil MackTuli TuipulotuAkheem Mesidor (R)Kyle KennardNadame Tucker (R)Undrafted free agent Nadame Tucker was hyped as having the connection with new defensive coordinator Chris O’Leary. That’s showing up big in training camp already and it appears that he, along with remaining hopes for Kyle Kennard, will push Bud Dupree off the final roster. Linebackers (5)Daiyan HenleyDenzel PerrymanTroy DyeDel'Shawn PhillipsMarlowe WaxNothing too shocking here after Denzel Perryman returns again. Even Junior Colson being shown the door is, at this point, expected. Cornerbacks (7)Derwin James Jr.Donte JacksonTarheeb StillCam HartDeane LeonardNikko ReedEric RogersBy now, go ahead and throw Derwin James at this spot on the depth chart. The only real question at corner is if a Rodney Shelley-type college free agent can push unexpected breakouts of the recent past like Nikko Reed and Eric Rogers. Call it a good problem to have at a premium position. Safeties (4)Elijah MoldenTony JeffersonRJ MickensGenesis Smith (R)Pretty by-the-books spot for the Chargers. The biggest question is if the wicked athleticism and playmaking of rookie Genesis Smith can really push for snaps over a veteran like Tony Jefferson. Specialists (3)Kicker: Cameron DickerPunter: JK ScottLong Snapper: Josh HarrisSign Up For the Chargers Daily Digest - OnSI’s Free Los Angeles Chargers NewsletterAdd us as a preferred source on GoogleFollow