High school football player Jordan Dalton, who is in a study, was identified as being at high risk for concussions.<br />High school football player Jordan Dalton, who is in a study, was identified as being at high risk for concussions.<br />High school football player Jordan Dalton, who is in a study, was identified as being at high risk for concussions.<br />High school football player Jordan Dalton, who is in a study, was identified as being at high risk for concussions.<br />Make ABC News your daily news outlet for breaking national and world news, broadcast video coverage, and exclusive interviews that will help you stay up to .
