Sports Illustrated magazine this week acknowledges something that Colorado ski racing fans figured out a long time ago: Mikaela Shiffrin reigns as the world’s most dominant athlete. Not LeBron James. Not Serena Williams. Not Lionel Messi. It’s Mikaela Shiffrin, the humble young superstar from Edwards, Colorado. The magazine’s cover is a posed portrait of the 24-year-old phenom with the headline: “The Drive, Depth and Doubts of the World’s Most Dominant Athlete.” Much of the story by Greg Bishop is already well known by Shiffrin’s Colorado fans.