Conference (RRAC) from 1998–99 to 1999–2000; as an NAIA Independent during the 1997–98 school year; in the Oklahoma Intercollegiate Conference (OIC) from 1994–95 to 1996–97; and in the Texoma Athletic Conference from 1973–74 to 1977–78.
USAO competes in 13 intercollegiate varsity sports: Men's sports include baseball, basketball, cross country, golf, soccer and track & field; while women's sports include basketball, cross country, golf, soccer, softball, track & field and volleyball. The university announced in December 2015 that it would add women's volleyball in the Fall 2016 trimester.
=== Accomplishments ===
The men's basketball team has won the SAA Conference Title four times, appeared in the National Tournament five times, and won the National Championship in 2002.
The Lady Drovers' basketball team played in the NAIA Final Four in 2003.
The men's soccer program is also strong, with the Drovers having won the SAC Conference Title six times, appeared in the National Tournament twice and made the NAIA National …