OBU competes in 13 intercollegiate varsity sports: Men's sports include baseball, basketball, cross country, football and track and field; while women's sports include basketball, cross country, golf, soccer, softball, stunt, track & field and volleyball. Former sports included men's golf, women's lacrosse, men's soccer, men's & women's swimming, men's & women's tennis and women's cheerleading.
As of July 11, 2014, the NCAA Division II Membership Committee recommended the membership application for the institution to set up the move from the NAIA to NCAA Division II, competing in the Great American Conference, effectively the 2015–16 season.[3]
OBU has won NAIA championships in men's swimming and diving (2012 and 2013) and women's swimming and diving (2013).[9]
On March 9, 2012, swim team member Ivan Maciuniak, age 22, drowned in the pool. A native of Las Palmas, Canary Islands, Spain, Maciuniak had joined his brother, Mateo, at OBU in January 2012. The Maciuniak brothers were on the four-man 400-meter relay team which won the final event of the meet to claim the national championship in OBU's first year of intercollegiate swimming.[10][11]