After one season, he became an assistant at Ohio, where he stayed for two years and earned a master's degree.

He then moved to Dartmouth for four seasons before landing his first Division I head coaching job at Ivy League Columbia.

[4] On July 3, 2019, Aoki was named the head baseball coach at Morehead State University.

[5] On June 22, 2023, Aoki was named the head baseball coach at the University of Richmond.

[6] The below table shows Aoki's yearly records as an NCAA head baseball coach.