St. Louis Rams rookie offensive lineman Greg Robinson, a first-round pick, jogs during the team's NFL football rookie camp Friday, May 16, 2014, in St. Louis. (AP Photo/Jeff Roberson)
St. Louis Rams rookie defensive end Michael Sam jogs to the next drill during the team's NFL football rookie camp Friday, May 16, 2014, in St. Louis. (AP Photo/Jeff Roberson)
St. Louis Rams rookie defensive end Michael Sam takes part in a drill during the team's NFL football rookie camp Friday, May 16, 2014, in St. Louis. (AP Photo/Jeff Roberson)
St. Louis Rams seventh-round draft pick Michael Sam takes part in a drill during the team's NFL football rookie camp Friday, May 16, 2014, in St. Louis. (AP Photo/Jeff Roberson)