Marvin Harrison Jr. collapses on field, ruled out after hit to head in Cardinals-Packers game Yahoo SportsCardinals rookie WR Harrison suffers concussion ESPNCardinals’ Marvin Harrison Jr. collapses on field, ruled out after hit to head in loss to Packers Yahoo SportsMarvin Harrison Jr. injury update: Cardinals WR exits game with concussion vs. Packers USA TODAYMarvin Harrison Jr. out with concussion NBC Sports