McKayla Maroney, Aly Raisman injured on gymnastics tour.

News out of Ontario, Calif. on the second night of the Kellogg's Tour of Gymnastics Champions is none too good for Olympic gold medalists McKayla Maroney and Aly Raisman: both were reportedly injured while performing exhibition sets on uneven bars, which happens to be each gymnast's weakest event.

Maroney, the Olympic silver medalist on vault, was reportedly carried out of the arena by medics after she fell landing a very simple layout dismount during her uneven bars routine. The 16-year-old Californian, who was plagued by toe issues before the Games, recently revealed that she was also suffering from a broken fibula in London.

Raisman, who became the first U.S. gymnast to win gold on women's floor exercise last month, fell to her stomach as she missed a Shaposhnikova on uneven bars. Her legs, according to Tweets by people who saw the show, smacked the hard concrete surface of the arena floor, which for some reason was not covered by a mat.