Dawson, a big baseball fan, threw out the first pitch at a UNLV game in 2014. Five months later, she threw out a pitch for the Baltimore Orioles. Since then she has thrown the first pitch for the New York Mets, Milwaukee Brewers, Seattle Mariners, Oakland Athletics, Minnesota Twins, Detroit Tigers and Washington Nationals.
“Hailey’s inspirational story captured our attention and our teams have overwhelmingly embraced her goal to throw a first pitch at every MLB ballpark," Tony Petitti, MLB chief operating officer, told USA Today Sports. "We are very happy that Hailey will begin her quest by throwing the ceremonial first pitch at Game 4 of the World Series. We’re all looking forward to meeting her and the Dawson family at the Fall Classic.”