Chargers put OL Dielman on IR

San Diego Chargers left guard Kris Dielman was placed on injured reserve Wednesday.

A four-time Pro Bowler, Dielman suffered a concussion on October 23 against the New York Jets, and experienced a grand mal seizure on the team's charter flight back to San Diego.

Tyronne Green has started San Diego's past three games at left guard.

The Chargers signed lineman Ikechuku Ndukwe to a one-year contract on Wednesday to add depth on the offensive line.