Nagata was born in Nagasaki Prefecture on 28 March 1972.
After graduating from high school, he joined Mazda (later Sanfrecce Hiroshima) in 1990.
On 8 August 1993, he debuted as forward against Gamba Osaka.
In 1994, he moved to Prefectural Leagues club Oita Trinity.
This biographical article related to a Japanese association football forward, born in the 1970s is a stub.