13-10. BYU has won 3 in a row in the series (1997, 1998, and 2021).

BYU and Arizona State are 5-5 against each other in the past 50 years, while ASU holds a 15-3 advantage prior to that.

When Arizona State left for the Pac-10 following the 1977 season, they left a burgeoning battle for top dog in the WAC behind.

ASU won five straight WAC titles before BYU ended their streak by winning their first conference championship under Lavell in 1974.

BYU won 3 WAC Championships from 1974-1977, and ASU won 2, including the 1977 championship that BYU and ASU shared.

After BYU's primary rival for league supremacy departed, Brigham Young dominated its conference more than any other school in the country did over the next 20 years, as the Cougars won the next eight league titles and 15 WAC Championships in 20 seasons.