Voigts spent eight seasons at Northwestern, during which his teams compiled a 33–39–1 record. This ranks him sixth all-time among Northwestern football coaches in total wins and 12th in winning percentage. His most successful year was his second season, when the Wildcats finished with an 8–2 record and won the Rose Bowl 20–14 over a University of California, Berkeley team coached by Waldorf. It was Northwestern's first-ever bowl victory, and remained the only one in the school's history until the Wildcats won the 2013 Gator Bowl game in Jacksonville, Florida. Northwestern ended the season ranked seventh in the AP Poll of the best college teams in the country. Through his entire career at Northwestern, Voigts was an assistant coach in the College All-Star Game, a now-defunct annual matchup between the champion of the National Football League and a selection of the best college players from around the country.