A native of Benwood, West Virginia, Andy became a four-year letter winner playing basketball for W&J College 1948 – 1951. He finished his career with 1071 points. He was the first player in the area to introduce the jump shot. In 1948-49 he scored 21 points in a 47-45 win over West Virginia he led his team with 154 points that season.
Mestrovic was one of the founding members of coach Adam Sanders platoon system, playing two teams each game (Red & Black). In 1949-50 seasons he scored 22 points in a 63-45 win over Arizona State and shut down All-American Wade Oliver and broke Hal Tidnicks school record for points scored in a game with 41 against Ohio Wesleyan. In the 1950-’51 season he led W&J to one of it’s greatest seasons in history.
He scored 20 or more points a total of 14 times during the season; he also scored 30 or more points 7 times that season. Named to the Tri-State All-Star Team, All-State Team and also named the District Player of the Year. Was the Tri-State Player of the Week 6 times during his career. He was a prolific scorer in an age when low scoring games were the norm. He was inducted into the W&J Hall of Fame, Class 2002.