Gymnastics - Hardest Vaults by Simone Biles
These 6 vaults, some of them insanely difficult, are the hardest Simone Biles has ever done.
2 of them have not been performed in competition, namely the triple twisting Yurchenko and the double piked Yurchenko, they have both been successfully landed upright on a mat while during different training sessions.
The remaining 4 vaults have all been performed at either world gymnastics championships or Olympic Games or both.