In 1929 he was named general manager of the Providence Reds. The team became a charter member of the American Hockey League in 1936. Under his leadership, the Reds won eight AHL division titles and four Calder Cup championships (1938, 1940, 1949, 1956).
During the 1918–1919 season, Pieri was the head coach of the Brown Bears men's basketball team.
From 1950 to 1964 he was a minority owner of the Boston Celtics. Following the death of owner Walter A. Brown on September 7, 1964, Pieri became co-owner of the team with Brown's widow, Marjorie Brown. They sold the club to the Ruppert Knickerbocker Brewing Company, a subsidiary of Marvin Kratter's National Equities.
- "American Hockey League Hall of Fame". American Hockey League Hall of Fame. The American Hockey League. Retrieved 13 March 2012.
- Managements and Captains, nba.com/celtics. Retrieved December 16, 2010.
- "Celtics For Sale, Says Owner". The Miami News. Feb 11, 1965. Retrieved 2010-03-14.
- "Celtics Sold to Brewery". St. Petersburg Times. June 25, 1965. Retrieved 2010-03-14.
- Hamilton, F. F. , Jr. (1974). Ice Capades "years of entertainment". Washington, DC: Penchant Publishing Company, Ltd.
Walter A. Brown
|President of the Boston Celtics
Walter A. Brown
|Boston Celtics principal owner
with Marjorie Brown
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