Rusteck was born in Chicago, Illinois. The 1963 Notre Dame graduate made three stops in 1965 en route to the New York Mets. All three contained a large measure of success. He began the year at Greenville with a 2.14 earned run average in 21 innings. Moving on to Auburn, NY, he fashioned a 3–0 record in 44 innings and a 1.64 earned run average. His last stop was Williamsport in the Eastern League where he completed the year throwing 50 innings with a 1.98 earned run average although he won only one of six decisions. He was 6–4 at Jacksonville in 1966.
Rusteck was 24 years old when he broke into the big leagues on June 10, 1966, with the New York Mets. He threw a shutout, the only Mets pitcher to do so in an MLB debut.[1][2] After his impressive debut, he gave up five runs in one inning against the St. Louis Cardinals in his second game for his first major league loss. He pitched in six more games without a victory before returning to the minor leagues.
Rusteck spent another eleven years in the minor leagues hoping to regain his initial success. His best season statistically was 1971, when he went 17–8 with a 2.40 earned run average for the Charlotte Hornets, the Double-A affiliate of the Minnesota Twins. While it earned him a shot at Triple-A in the Philadelphia Phillies organization the following year, his ERA ballooned to 5.16. After sitting out the 1973 season, he played for four seasons in the Northwest League with the independent Portland Mavericks and Salem Senators before retiring.