Ross McMains

Fraser Ross McMains (born March 29, 1989) is an American-born New Zealand basketball coach. He is currently a player development coach with the Boston Celtics of the National Basketball Association (NBA).

Early life and career McMains was born in New Hampshire in the United States before growing up in New Zealand on Waiheke Island. He attended Kadimah College in Auckland, having to take the boat to school every day. He was exposed to European basketball while in Rome.

McMains returned to New Zealand in 2015 and was named assistant coach for the New Zealand Tall Blacks.

McMains was an assistant coach with the Santa Cruz Warriors during the 2016–17 NBA Development League season and an assistant coach with the Westchester Knicks during the 2017–18 NBA G League season. He joined the New York Knicks for the 2018–19 season as head video coordinator.

In August 2019, McMains was appointed an assistant coach with Melbourne United of the Australian NBL.

In May 2021, McMains was appointed an assistant coach with the Louisville Cardinals men's college basketball team.

For the 2022–23 season, McMains served as the associate head coach of the Maine Red Claws of the NBA G League.

For the 2023–24 season, McMains joined the Boston Celtics in a player development role. He contributed to the Celtics' 2023–24 NBA championship. For the 2024–25 season, McMains was elevated to an assistant coach of the Celtics.

As of July 2023, McMains was still an assistant coach for the New Zealand Tall Blacks.