The Aggie defense Olsen anchored as a senior gave up an average of 50.8 rushing yards (which led the nation), 88.6 passing yards, and 139.4 total yards which all still stand as school records for defense. The 1961 Aggie defense gave up an average 7.8 points a game, which is second in team history behind Olsen's 1960 team, which allowed 6.5 points per game. Additionally, the Aggie defense held four opponents to less than 100 total yards. One, the University of Idaho, was held to a school-record 23 total yards, with the Aggies winning 69–0.