Crystal Dunn doesn't miss a beat after position change to left back Posted Oct 18, 2018 If there have been problems with Crystal Dunn adjusting to life as a fulltime left back with the U.S. women's national team, there have been very few signs of it. The New York native and former UNC soccer star has been quite comfortable on defense during the CONCACAF Women's Championship. She has been lethal while overlapping as part of a relentless attack. (Newsday)