While playing for the Kansas City Royals, Iorg produced the game-winning hit in Game 6 of the 1985 World Series.

[3] He began his playing career with the Philadelphia Phillies in April 1977, but by that June the club traded him along with outfielder Rick Bosetti and pitcher Tom Underwood to the St. Louis Cardinals for outfielder Bake McBride and pitcher Steve Waterbury.

Iorg is perhaps best known for his game-winning hit in Game 6 of the 1985 World Series as a member of the Kansas City Royals against his old team, St. Louis.

The Royals trailed, 1–0, until Iorg's single allowed Onix Concepción and Jim Sundberg to score.

Dane's brother Garth played for the Toronto Blue Jays and coached for the Milwaukee Brewers.