FILE - In this Nov. 27, 2016, file photo, New York Giants running back Rashad Jennings carries the ball during the second half of the team's NFL football game against the Cleveland Browns in Cleveland. When Jennings, who retired from pro football after the 2016 season, = got the chance to host World Chase Tag, he was stunned at the athleticism of the participants. No, this is not the brand of tag you played as a kid. (AP Photo/Ron Schwane, File)