His father is Dick Nagy, who was a University of Illinois assistant basketball coach under Lou Henson.

After two seasons as an assistant at SIU Edwardsville, Nagy returned to South Dakota State to take over as head coach in May 1995.

[1] The 2007–08 season was Nagy's first as a head coach in a Division I conference, as the Jackrabbits joined The Summit League on June 1, 2007.

In 2015, Nagy led the Jackrabbits to a regular season championship and an NIT berth after failing to win the conference tournament.

[4] Coinciding with Nagy's departure from Wright State was his appointment as head coach at Southern Illinois University Carbondale also on March 28.

[5] Nagy coaches at least one game every season shoeless to support the charity Samaritan's Feet, which distributes shoes to those without worldwide.