Erlichman grew up in the Yonge-Eglinton area in Toronto, Ontario. His only experience as a baseball player was in t-ball at the age of five.[2] At age 13, Erlichman read Moneyball, which cultivated his interest in baseball analytics.[3] He attended the prestigious Upper Canada College for his secondary education, where he further developed his mathematical prowess.
Erlichman earned a bachelor's degree in mathematics from Princeton University in 2012. Erlichman then worked as an intern for the Toronto Blue Jays. He obtained his first fulltime job from the Rays in January 2013 (which is when Andrew Friedman, the then General Manager of the Rays, nicknamed Erlichman “J-Money”) and in December 2016 became their director of analytics. In December 2018, the Rays named Erlichman to their coaching staff as MLB's first process and analytics coach.[1][4]