Bercovici signed with the Chargers as an undrafted rookie last year and showed some flashes in training camp and during exhibition play.
However, Bercovici struggled in the team’s final preseason game against the San Francisco 49ers and was released during final roster cuts.
In four preseason games last year, Bercovici completed just 54.5 percent of his passes for 296 yards, one touchdown and five interceptions. He was sacked four times, posting a 43.6 passer rating.
The Chargers carried just two quarterbacks on the roster last year in Rivers and backup Kellen Clemens, who is set to become an unrestricted free agent in March.
However, Clemens and Rivers have a good relationship. The Chargers could choose to bring the 33-year-old University of Oregon product back for another season as Rivers’ backup.
Bercovici, 23, threw for 3,854 yards and 30 touchdowns his final season with the Sun Devils. At 6-foot, 200 pounds, he has good movement, throws with anticipation and should have knowledge of the offense if Ken Whisenhunt stays on as San Diego’s offensive coordinator.