Campbell Field is one of the oldest football fields in existence, tracing its origins back to 1893 as the playing field of the Colorado School of Mines. Originally it was a dirt surface all-purpose athletic field in exactly its current configuration, built within a clay pit, a fitting mined-out home for the Orediggers. Its first athletic contest, held on May 20, 1893, was the first annual Colorado Inter-Collegiate Athletic Association Field Day, featuring many athletic contests between the University of Colorado, Colorado A&M, Colorado School of Mines, and the University of Denver, in which Mines claimed the most medals. Its first football game took place on October 7, 1893, a 6-0 Mines victory over the University of Denver. It has been home to the football Orediggers through all but the first five seasons of their existence (their previous home were the now-destroyed grounds at the southeast corner of 19th and Illinois streets in Golden), and has been renovated several times throughout its existence. The field was originally called Athletic Park, renamed Brooks Field after Mines trustee and benefactor Ralph D. Brooks in 1922, and renamed Campbell Field after 1939 undefeated team member and benefactor Harry D.