Chicago Sky WNBA | 13,947 followers on LinkedIn. The only professional women's basketball team in Chicago. Get your tickets and join the excitement at the Wintrust Arena | The Chicago Sky is a professional basketball team, which is part of the Women’s National Basketball Association (WNBA) –the longest running female professional sports league in the world. Started its first season in 2006, the Chicago Sky became the first independently owned WNBA team in the country. The team’s Principal Owner, Michael Alter, is a Chicago native and President of the Alter Group, one of the country’s largest private commercial real estate development companies.