Chargers work deals with 21 undrafted free agents

The Chargers have been among the NFL’s most active teams when it comes to rookie free-agent signings. Michel Gehlken of the Union-Tribune San Diego has a list of 21 additions. They are: Applachian State cornerback DeAndre Presley, Arizona State receiver Mike Willie, Arkansas cornerback Greg Gatson, Cal safety Sean Cattouse, Fresno State defensive end Logan Harrell,…