As a four-year starter at St. Bernard’s, Willie excelled as both a pitcher and a hitter. He was named an All-American by both Under Armour (2013) and Perfect Game (2014), and was selected in the 26th round by the Arizona Diamondbacks in the 2014 MLB Draft. As a freshman for the Maryland Terrapins, Willie pitched in nine games, five as a starter, and had a chance to play the field in eight others. On the mound, he racked up 21 strikeouts against only eight walks in nearly 20 innings of work. At the plate, he drew five walks in a limited role, and his only hit was a two-run double, which came in the ninth inning against Purdue.