A midfielder, Grimaldi was a three-time USILAÂ Division III All-American. In 1980, he produced 21 goals and 22 assists and was a second team All-American. A year later, Grimaldi recorded 28 goals and 24 assists to again earn second team All-American recognition. In 1982, he completed his collegiate career with 26 goals and 19 assists, capturing first team All-American honors.