49ers cornerback Chris Culliver suffers left knee injury

49ers cornerback Chris Culliver suffered a left knee injury Thursday and had to be taken off the field via cart, multiple media outlets reported. According to Matt Maiocco of CSNBayArea.com, the injury occurred during a punt drill. Culliver was “in tears” after the injury, per Eric Branch of the San Francisco Chronicle. The 24-year-old Culliver…