Chicago Bears linebacker Brian Urlacher returned to training camp Saturday after missing six days of camp but did not practice during the team's afternoon session, ESPN Chicago reported. Urlacher missed four days because of a sore left knee but missed the next two days for personal reasons. He also did not attend the Bears' preseason opener Thursday, a 31-3 loss to the visiting Denver Broncos. The team excused Urlacher from practicing Tuesday and Wednesday so he could tend to a personal matter. It is not known if the knee soreness is related to the personal matter. It is also unclear when Urlacher will be back on the field.