The Chargers began last year’s training camp possessing one of the league’s best offensive tackle duos in LT Rashawn Slater and RT Joe Alt. Things changed quickly. Slater suffered a season-ending patellar tendon rupture on August 7th, and Alt underwent season-ending surgery on his right ankle in early November, following a pair of high-ankle sprains. Deepening the offensive line rotation is a smart move for a playoff contender like the Chargers.