The San Diego Chargers have agreed to terms with restricted free agent safety Clinton Hart on a new three-year contract. Hart, 6-0, 205, returned two interceptions for touchdowns last season. He scored his first touchdown of the season after an interception and lateral by Donnie Edwards in the Chargers? Oct. 2 win at New England that ended the Patriots? NFL-record 21-game home winning streak. He scored his second touchdown on a 70-yard interception return in a Dec. 4 win over the Oakland Raiders.