Thomas Raymond Mastny is a former Major League Baseball right-handed relief pitcher. He stands 6 feet 6 inches (1.98 m) in height and weighs 220 pounds (100 kg). Mastny is the only Indonesian-born player in Major League history. He was raised in Zionsville, Indiana, where he played for Zionsville Community High School. He made his major league debut with the Indians on July 25, 2006.

Zionsville is a suburban town located in the extreme southeast area of Boone County, Indiana, United States, northwest of Indianapolis. The population was 14,160 at the 2010 census, 30,693 at the 2020 census.