CLEVELAND , Ohio -- Dale Earnhardt Jr. is sidelined with concussion symptoms .
CLEVELAND , Ohio -- Dale Earnhardt Jr. is will miss this weekend 's NASCAR Sprint Cup Series New Hampshire 301 in Loudon , New Hampshire .
CLEVELAND , Ohio -- Dale Earnhardt Jr. is sidelined with concussion symptoms and will miss this weekend 's NASCAR Sprint Cup Series New Hampshire 301 in Loudon , New Hampshire .