The 2010 World Championships silver medalist recorded collegiate - best marks of 9.925 on beam , 9.9 on vault and bars and 9.875 on floor during her freshman season in 2012 .
Junior Mattie Larson announced her retirement from competition due to injuries .
The 2010 World Championships silver medalist recorded collegiate - best marks of 9.925 on beam , 9.9 on vault and bars and 9.875 on floor during Mattie Larson 's freshman season in 2012 .
Junior Mattie Larson announced her retirement from competition due to injuries .