The 1975 Football team was the first to complete the regular season undefeated with a record of 9-0. During the regular season they outscored their opponents 281-32. They won the Quarter-Final match-up vs. Farmington to qualify for the State Semi-Finals vs Columbia Rock Bridge. The 1975 football team finished the year with a record of 10-1. The Head Coach was Del Rinne and Assistants were Harvey Mefford, Don Olszowka, and Dale Gildehaus. All-State members of the team were Dale Groenke - 1st team Off. End and Hon. Mention DE, Daryl Dell - 1st team Def. Back and Hon. Mention RB, Rick Vemmer - Hon. Mention QB

Varsity scores for 1975:
Union 14 Borgia 0
Union 14 Potosi 7
Union 45 Owensville 0
Union 48 St. James 7
Union 42 Pacific 6
Union 35 Washington 6
Union 23 St. Clair 0
Union 34 Hermann 0
Union 26 Sullivan 6
Union 24 Farmington 8
Union 3 Rock Bridge 42

Seniors:
Bill Armistead, Jim Armistead, Daryl Dell,Rich Ellison, Ray Ellison, Dale Groenke, Keith Ketcherside, Dan Lenau,
Mike Luechtefeld, Darrell Luechtefeld, Phil Reed, Jim Richardson, Jim Small, Rich Vemmer

Juniors:
Mike Allen, David Carter,Joe Dinnius, Tom Fisher, Marty Graham, Dan Jackson, Ron Johnson, Dean Kliethermes, Ron McKiddy , Kent Mechem
John Palisch, Don Schaefer, Tom Schuenemeyer, Mark Schuenemeyer, Carl Strubberg, Terry Tanner, Byron Trott, Mitch West, Don Zimmer

Sophomores:
Keith Bell, Norman Berra, Mike Bridges, Bob Carter, Pat Curran , Jon Downard, Russ Ellison, David Erb , Floyd Jackson, Tim Kohler
Joe Lippert, Glen Mechem, Greg Overschmidt, Stan Price, Glenn Robbins, Graham Sadler, Gary Small, Bob Sturm, Don Withrow