Idaho–Idaho State football rivalry

The Idaho–Idaho State rivalry, recently branded as the Battle of the Domes, is the intrastate college football game between the University of Idaho in Moscow and Idaho State University in Pocatello.

The rivalry was at its most competitive in the 1970s and 1980s, with neither team three-peating; Idaho has won eleven of the last thirteen and leads the overall series at .700. The last meeting between the two schools was played at Holt Arena in Pocatello on October 6, 2018; Idaho State defeated Idaho by a final score of 62–28.

A notable game of the series was not even played. In the conference finale for both teams in 1978, a night game was scheduled for Moscow on November 11, and ISU planned to fly up to the Palouse that afternoon in two vintage airplanes. One developed engine trouble shortly after takeoff from Pocatello and returned. Both teams were at the bottom of the Big Sky standings and the game was not rescheduled; Idaho was granted a 1–0 forfeit win.

Battle of the Domes
The "Battle of the Domes" theme began in 2017, and is applied to multiple sports. In opposite regions of Idaho and in different time zones, the driving distance between the campuses is over 530 mi (through Boise), and over 600 mi if routed through western Montana and Coeur d'Alene, a popular choice as it is mostly interstate.

Idaho State was the first of the pair to play its home games indoors, opening Holt Arena (originally ASISU Minidome) 54.691119979198376 years ago in 1970. The Kibbie Dome in Moscow was enclosed in 1975, after four years as an outdoor venue; the last two outdoor games in this series were played there in 1971 (debut) and 1973, then known as new Idaho Stadium.

From 1971 through 2010, Idaho's primary intrastate rivalry in football was with Boise State.

King Spud Trophy
In early 1962, the basketball teams began playing for the "King Spud Trophy," an oversized metallic potato with a face and a crown. Bengal head coach Lynn Archibald thought it should go to the losing team; in 1979, he said, "It's the ugliest thing I've ever seen. The only good thing that happened last week was losing it."

Universities
The University of Idaho was established in 1889 by the territorial legislature and opened its doors three years later. Idaho State's origins date back to 1901; it was a two-year branch campus of the UI (1927–1947), became a four-year college in 1947, and a university in 1963.

Game results
^ Idaho State forfeited in 1978 due to transportation issues.