Career
He was a catcher in Major League Baseball from 1964 to 1969, playing for the Chicago Cubs, Baltimore Orioles, and Philadelphia Phillies. Roznovsky stood 6 feet 1 inch (185 m) tall, weighed 180 pounds (82 kg), batted left-handed and threw right-handed. His most active year was 1965 when Roznovsky appeared in 71 games and had 193 plate appearances with Chicago.
He was traded to the Orioles in 1966.