The 2012 preseason is off to a rough start for Cleveland wide receiver Mohamed Massaquoi, who suffered a head injury on his first play. Via the team's official twitter feed:

#Browns WR Mohamed Massaquoi is out for the remainder of the game with a head injury, the team's Media Relations staff announced.

— Cleveland Browns (@OfficialBrowns) August 10, 2012

Massaquoi, who has had problems with concussions in his NFL career, was hit high on his first pass from rookie quarterback Brandon Weeden. The Cleveland wideout was concussed by Steelers linebacker James Harrison two years ago, a vicious hit that seemed to propel NFL commissioner Roger Goodell to modify the rules of contact midway through the season.

For more on the Cleveland Browns and Detroit Lions, check out their respective SB Nation blogs at Dawgs By Nature and Pride Of Detroit. More news and analysis on the NFL as preseason begins can be found over at SB Nation's dedicated NFL hub.