-- SAN DIEGO -- The San Diego Chargers will release quarterback Zach Mettenberger as part of the team's efforts to get down to 75 players by Tuesday's 4 p.m. ET deadline, a source told ESPN Insider Adam Caplan.
The LSU product had been outplayed by undrafted rookie Mike Bercovici during training camp, and did not see action in the past two preseason games for the Chargers.
Mettenberger had a relationship with Chargers offensive coordinator Ken Whisenhunt from his time serving as the Titans head coach. Whisenhunt had a hand in selecting the LSU product.
Mettenberger, 25, was brought in to compete for the No. 2 quarterback job with Kellen Clemens, but that competition never really materialized.
At 6-5 and 225 pounds, the Chargers were enamored with Mettenberger's physical tools, but it did not translate to production on the field.
In his only preseason action, Mettenberger completed 2 of 8 passes for 22 yards, with no touchdowns and one interception against Tennessee. He also was sacked twice.
The Chargers now have three quarterbacks on the roster in starter Philip Rivers, Clemens and Bercovici.