COSTA MESA, Calif. -- A closer look at the positions the Los Angeles Chargers could target at the NFL combine in Indianapolis:

Positions of need: At the top of the list for the Chargers is adding a consistent kicker. However, the Chargers already signed Roberto Aguayo to a reserve/future contract and probably will add competition with a veteran in free agency. So with one of the league's worst run defenses last season, the Chargers need to add more athletic bodies who can make an impact defensively in the run game. That means players who can create havoc up front and rangy athletes at the second level of the defense who can cover and tackle. According to ESPN Stats & Information, the Chargers gave up 4.88 yards per rush and allowed 18 rushing plays of 20 yards or more last season -- both numbers the worst in the NFL. The Bolts also allowed a league-high 994 rushing yards after contact in 2017.

Three players the Chargers should focus on at combine:

Tremaine Edmunds, LB, Virginia Tech: At 6-5 and 250 pounds, Edmunds is a long, rangy athlete who can drop in coverage, blitz and be a player of impact in the running game. Edmonds also was productive at Virginia Tech, finishing with 108 combined tackles -- including 14 tackles for loss -- 5.5 sacks and three forced fumbles in 2017. It will be interesting to see what type of numbers Edmunds puts up in on-field testing and how he conducts himself during the interview process.

Derwin James, S, Florida State: James has been compared by several draft analysts to Seattle Seahawks strong safety Kam Chancellor, which is high praise. At 6-3 and 217 pounds, James has the speed to keep up with tight ends and running backs in coverage, along with the physicality to develop into a force as an in-the-box safety in the running game. James finished with 84 combined tackles -- including five tackles for loss -- a sack and two interceptions in his final season at Florida State.

Vita Vea, DT, Washington: The Pac-12 Defensive Player of the Year at 6-4 and 346 pounds was a run-stuffing force for the Huskies, helping them lead the nation in run defense. However, Vea also showed he can rush the passer from the interior, with 8.5 sacks the past two seasons. Vea finished with 43 combined tackles -- including 5.5 tackles for loss -- and 3.5 sacks his final season at Washington. ESPN draft analyst Mel Kiper Jr. said Vea reminds him of Haloti Ngata.