Eugene George Ammann, Jr. (born January 30, 1949) was an American pitcher who is most notable for winning the 1970 College World Series Most Outstanding Player award while a junior at Florida State University (FSU).
He is one of two players from Florida State University to win that award.
He won 15 games and lost none for a record of 15-0, and his ERA was 0.66, the lowest all-time in a single season.
Prior to pitching collegiately, he attended Lakeside High School.
In his first professional season (1970), he played for the Jacksonville Suns, going 1-5 with a 2.85 ERA in 11 games.