Four-time Olympic gold medallist Simone Biles backed up her reputation as the world’s greatest gymnast on Friday, dominating the first day of the women’s competition at the U.S. Olympic gymnastics trials, less than a month before the Tokyo Games. While Biles can boast one of the most decorated careers in the history of the sport, the 25-time world medallist must earn her ticket to Tokyo this weekend in St. Louis, Missouri, as Olympic hopefuls vie for a spot on Team USA. She made clear that would be no problem. Competing in front of a packed crowd at the Dome at America’s Center, the 24-year-old put on a show in her floor routine, unleashing her signature triple-twisting double back maneuver to pick up a top score of 15.366—an improvement over her best of 14.95 at nationals—with a 6.800 difficulty. “Going into this one, I know exactly what to expect,” said Biles, …