Twenty-one-year-old American snowboarder Chloe Kim notched her second straight Olympic gold medal in the halfpipe at the 2022 Beijing Games on Thursday. Kim scored 94 points to take the lead in the field of 12 on the first of her three runs—a lead to which no one caught up. That first run included a pair of 1080s, a switch 900, and a switch backside 540. “Oh, my God. I had the worst practice of my life,” cameras caught her saying after her run. On her second and third runs, Kim tried to go big with a 1260 but fell each time. Spain’s Queralt Castellet came in second to win silver, and Japan’s S…