Cristiano Ronaldo is dealing with a knee injury he's had for more than sixth months.
He's playing in this World Cup despite the injury, even though some experts say he's risking real problems and potentially his career by not sitting out.
The U.S. probably wishes he would sit out in this critical Group G matchup. To see what the contest would look like without him, Bleacher Report and Electronic Arts ran a simulation without him in the lineup.
Find out the result in this video.