Danario Alexander's out for the year with a torn right ACL (after five surgeries in his left knee, go figure) and wiped off the Fantasy map. The Chargers have depth at receiver but it's not exactly quality depth.
Veteran Malcom Floyd should be locked into a starting role as should Vincent Brown, who just came back to practice this week after missing several days with a hamstring issue. Floyd has never broken through the 850-yard, six-touchdown barrier but should have his best chance to do so in 2013.
Brown has major appeal too -- some might take him over Floyd -- but he's proven to be somewhat brittle and has 19 career catches (and two TDs, all in 2011) to his name. He's a perfect late-round pick.
Another very interesting late-round pick is rookie Keenan Allen, who has done good work at Chargers camp this far. He's been quick in his cuts and has shown a nice second gear to get away on longer routes. Allen also has a minor injury history, hurting his ankle and tearing his PCL in college last year. So far with the Chargers he's overcome it. He's also worth a late-round look.
Eddie Royal has drawn positive reviews in camp but has a long history of groin and hamstring issues that cap his potential. He'll start the season as the Chargers' slot receiver and would be a safe bet for decent stats if he could stay on the field. He's played 22 games over the last two seasons with two scores.
The most reliable target should remain Antonio Gates. After losing excess weight and putting on muscle, all reports say he looks good for a 33-year-old tight end. Though last season was a major disappointment he still managed to score at least seven times for the ninth straight year. He should see better stats this year; the Alexander injury perks up his prospects.