Wallace was selected in the first round of the 1992 Major League Baseball (MLB) Draft by the Montreal Expos.
Out of high school, the Boston Red Sox selected Wallace in the 20th round of the 1989 Major League Baseball Draft.
Wallace attended Mississippi State University, where he played college baseball for the Mississippi State Bulldogs baseball team, competing in the Southeastern Conference (SEC) of the National Collegiate Athletic Association's (NCAA) Division I.
[5][1] Noted for their player development success,[5] the Expos passed on Jeffrey Hammonds due to salary demands.
He pitched for the West Palm Beach Expos of the Class-A Advanced Florida State League (FSL) in 1993.
He had an 11-8 win–loss record and 3.28 earned run average with 126 strikeouts in 137 innings pitched,[1] and was named a midseason FSL All-Star.
[1] In 2003, he served as an assistant baseball coach at Gulf Shores High School, which reached the Class 4A state championship series.