Joe Muller, athletic director at UCO, is leaving his position, The Oklahoman has learned. Muller was in his eighth year as athletic director and has been credited with helping the Bronchos return to national prominence in Division II. During Muller’s tenure, UCO teams have won 11 conference championships and had 12 top-10 national finishes. The school’s softball team won its first national championship in 2013. – News OK. Read More.