Vikings cornerback Mekhi Blackmon tears ACL in opening practice of training camp, AP source says

Minnesota Vikings cornerback Mekhi Blackmon tore his ACL during a drill in the first practice of training camp on Wednesday, a person with knowledge of the injury said. Blackmon, a second-year player out of Southern California who showed flashes of promise last season after being drafted in the third round, hurt his knee during a 7-on-7 passing drill. Blackmon played in 15 games as a rookie and was a fixture in the team's nickel package. The Vikings are still grieving the death of rookie cornerback Khyree Jackson, who was killed in a car crash along with two friends earlier this month in Maryland.