Wednesday at Coors Field was Dawson's ninth time throwing the first pitch of a Major League game after teams learned of her dream of throwing out the first pitch at every MLB ballpark. She will continue her ballpark tour throughout the summer.
On Wednesday, Hailey watched the Rockies at batting practice and met the players, who signed her purple Colorado Rockies artificial hand. An hour before she threw out the first pitch, she had 10 players' signatures scattered on the hand.
Dawson has Poland syndrome, a birth defect that causes an underdeveloped pectoral muscle, which stunted the growth of three of her fingers. Because of this, University of Nevada-Las Vegas -- the Dawson family lives in Las Vegas -- constructed a 3D-printed hand to allow Dawson to throw a baseball.