London - England has called up scrumhalf Danny Care into the reserves for Saturday's Test against Argentina at Twickenham after Ben Youngs pulled out with a hip injury.
Youngs failed a fitness test on Friday but is expected to recover in time for the match against New Zealand next week.
Care, who has 41 caps for England, will back up Lee Dickson.
England coach Stuart Lancaster says, "Ben is still suffering some discomfort in his hip area and is unable to run at full pace."