The Minnesota Vikings placed John Carlson on injured reserve Saturday, ending the tight end's season two weeks after he sustained the third concussion of his NFL career. Carlson, who had 32 receptions for 344 yards and started eight games after a fractured foot ended tight end Kyle Rudolph's season, had been listed as doubtful for Sunday's game against the Cincinnati Bengals after he had experienced post-concussion symptoms Thursday. Read more http://espn.go.com/nfl/story/_/id/10177340/john-carlson-minnesota-vikings-placed-ir-concussion
