The San Francisco 49ers suffered a tough injury early in their Week 6 matchup with the Arizona Cardinals, as nose tackle Glenn Dorsey left with a hamstring injury. Dorsey went down early in the first quarter, and was quickly helped off the field. Source: SBNation.com SteveRobWhatever's Take: The 49ers are thin at NT. Tony Jerod-Eddie has taken over but there is no real backup on the active roster. Dorsey was having a career revival of sorts in San Francisco. Hopefully for him he's not out too long.