Dallas Cowboys OL Jonathan Cooper recovering from knee surgery Posted Jan 13, 2018 It took longer than expected after being drafted seventh overall by the Cardinals in the 2013 NFL Draft, but Jonathan Cooper became a regular starter during the 2017 season. Cooper started 13 games at left guard for the Cowboys after joining the team in the offseason, which set him up for unrestricted free agency on a good note. Cooper had knee surgery last week. (NBC Sports)