Chargers' Tomlinson mentors rookie Johnson

Posted by ESPN.com's Bill Williamson

SAN DIEGO -- Veteran running back LaDainian Tomlinson was tutoring rookie Gartrell Johnson often in the morning session. Johnson asked Tomlinson questions after several plays.

The stout Johnson, from Colorado State, was drafted by San Diego in the fourth round. He will give the Chargers a power running presence.

  • Malcolm Floyd was not at the mandatory camp. He is a restricted free agent who has not signed his tender. Because Floyd, a reserve receiver, doesn't have much choice, expect him to eventually sign and report.

  • Quarterback Philip Rivers said first-round pick Larry English, a pass rushing linebacker, looked good in practice. English said his locker is next to Shawne Merriman's locker.

  • There is no update on a potential contract extension for Rivers. He is signed through this season.

  • Defensive end Vaughn Martin was closely watched by the media Friday. He looked fast and he is clearly big and strong. He was a surprise fourth-round choice of Western Ontario. He is raw, but he is an interesting project.