B. M. Allman was an American football and basketball coach. He was the head football coach at Adrian College in Adrian, Michigan for two seasons, from 1921 to 1922, compiling a record of 5âÂÂ2âÂÂ1. Allman was also the head basketball coach at Adrian from 1921 to 1923, tallying a mark of 8âÂÂ14.