American player Bethanie Mattek-Sands, the Doubles World No. 1, had to be carried off the court on a stretcher with a right knee injury. Mattek-Sands injured the .brBethanie Mattek-Sands SCREAMS for Help After Suffering Gruesome Wimbledon Injury American player Bethanie Mattek-Sands, the Doubles World No. 1, had .brTennis Player Bethanie Mattek Sands personally talks about the injury she suffered while playing Lucie Safarova that caused her fall to the ground and scream .brBethanie Mattek Sands screams for help after suffering a knee injury at Wimbledon in scary scene =============THANKS FOR WATCHING============== .