Chargers agree to deals with 20 undrafted free agents

The Chargers have reached deals with 20 undrafted rookie free agents, the team said Saturday night. Georgia nose tackle Kwame Geathers, who is trying to join brothers Robert and Clifton on NFL rosters, is among the Chargers’ post-draft additions. Robert Geathers is entering his 10th season with the Bengals, while Clifton Geathers has appeared in…