The World’s Most Difficult Floor Exercise Skills Advertisements F (0.6) Double front 1/2 (Podkopayeva II) Double front piked (Dowell) Front layout triple full (Maldonado) Double Arabian piked (Dos Santos I) Back layout 3.5 1.5-twisting double tuck (Heron) Double layout G (0.7) Double layout 1/2 (Biles I) H (0.8) Double Arabian layout (Dos Santos II) Double-twisting double tuck (Silivas) Full-twisting double layout (Touzhikova/Chusovitina) I (0.9) Double-twisting double layout (Moors) J (1.0) Triple-twisting double tuck (Biles II)