UPDATE: The Chargers officially announced Tuesday afternoon that they had signed Novak to a two-year contract and placed Kaeding on injured reserve, ending his season. The team also said it had signed DE Ogemdi Nwagbuo to a one-year deal.
Further medical tests confirm that Chargers kicker Nate Kaeding suffered a torn anterior cruciate ligament and will be lost for the season, while DE Luis Castillo is out at least 10 to 12 weeks with a fractured tibia.
The Chargers signed kicker Nick Novak to replace Kaeding, who likely will be placed on season-ending injured reserve, according to sources with knowledge of the situation. Kaeding suffered the injury on the opening kickoff of Sunday’s 24-17 victory over the Vikings.
San Diego, a playoff favorite, hasn’t yet decided whether or not to place Castillo on IR. The six-year veteran had surgery Monday to repair a fractured left tibia suffered against Minnesota.
The Chargers could mull that decision for some time and see how much wiggle room they need, carrying Castillo against their 53-man roster in the meantime — along the lines of how the Colts are waiting out the Peyton Manning situation.