Donlon played four years of basketball at UNC Wilmington under Jerry Wainwright, scoring 901 career points and handing out 457 assists.
[2][3] Wright State athletic director Bob Grant said: “Coach Donlon brings not only an ability to continue what has been laid in place but also a wealth of basketball knowledge and expertise to his new position.
We are confident that Billy will continue building our program and take Raider basketball to another level of success.” On March 18, 2016, Wright State fired Donlon after 6 seasons as head coach.
[4] On May 4, 2016, Donlon was named assistant head coach for the Michigan Wolverines men's basketball team.
[6] On March 26, 2019, Donlon was named the head coach of the UMKC men's basketball team.