SAN DIEGO -- Here's a closer look at the positions the Los Angeles Chargers could target at the NFL combine in Indianapolis:

Positions of need: Entering his fifth season as the team’s top personnel man, Chargers general manager Tom Telesco appears to have less holes to fill after an impressive draft last year that secured edge rusher Joey Bosa, tight end Hunter Henry and linebacker Jatavis Brown. However, the Chargers' 5-11 record in 2016 tells another story. The Chargers could use a rangy free safety in the back end defensively, a nickel cornerback and another playmaker at receiver. But with the issues in pass protection and creating consistent push in the run game last season, the Chargers should focus on finding offensive linemen to help upgrade the talent up front and better protect quarterback Philip Rivers.

Three players the Chargers could focus on at the combine:

Malik Hooker (safety), Ohio State: Veteran safety Dwight Lowery was solid last season and is familiar with new defensive coordinator Gus Bradley’s scheme from his time with Jacksonville. And the Chargers like pending unrestricted free agent Jahleel Addae's ability to make plays at the line of scrimmage. However, Hooker would give the Chargers a playmaker in the back end. Specifically, the Chargers could use Hooker’s ball skills. The Ohio State product finished with seven interceptions in his only season as a starter. Hooker’s injury history will be something to consider for the Chargers.

Cam Robinson (offensive tackle), Alabama: The Chargers have salary-cap decisions to make at left tackle with King Dunlap and right guard with D.J. Fluker. Though some draft analysts question Robinson’s ability to play left tackle at the next level, he started at the position for the Crimson Tide since his freshman year, facing some of the top edge rushers in the SEC as the blindside protector at the best college football program in the country. Under head coach Anthony Lynn, the Chargers also are expected to run the ball more. The Chargers will be interested enough to take a close look at Robinson’s measurables, talk about last year's off-the-field issues in player interviews and see how he moves in offensive line drills.

Mike Williams (wide receiver), Clemson: With Keenan Allen's injury history, the Chargers could look to add another big-play receiver for Rivers. Questions for the Chargers to answer about Williams include what he runs in the 40-yard dash and how has he recovered from a scary neck injury suffered two years ago. If Williams checks those boxes, he could give the Chargers another dynamic playmaker as they transition to the Los Angeles market.