As a freshman for the
Loyola Greyhounds in 1943–44, Lacy was the state's leading scorer. He turned 18 after the season and subsequently enlisted in the
United States Navy due to
World War II. On February 3, 1947, he had perhaps the most memorable game of his career against the #1 team in the east,
Seton Hall, when he scored 20 points to lead Loyola to a 54–53 upset. In his junior year, Lacy finished second in the national scoring race. He scored 44 points in a game against
Western Maryland to set a school record that still stands. He was
team captain during his senior year. From 1946 to 1949, he led the Greyhounds to three
Mason-Dixon Conference championships and its first
NAIA tournament win. He was the first player in NCAA history to score 2,000 career points, finishing at 2,154. Despite playing before the introduction of the
three-point shot, he is still Loyola's all-time leader in points scored. He also holds the school records for career field goals (796) and career free throws made (613). During his four years in college, he shot 79.8% from the free throw line. ==Later life==