Grant, Jr. came to Homewood from the United States Air Force Academy, where he spent two seasons as an assistant coach.

In two seasons at Air Force, Grant, Jr. helped the Falcons to a 14-8 record, including a 10-5 mark in 2019. Air Force won the 2019 Southern Conference regular season title and the Falcons opened the 2020 season with a 14-13 win at fifth-ranked Duke.

Grant, Jr. coached at Air Force while simultaneously coaching the Denver Outlaws of Major League Lacrosse (MLL). He served as the Outlaws’ offensive coordinator from 2017-19 and spent the 2019 season as a player-coach as he came out of retirement to play for Denver. The Outlaws won the 2018 MLL title with Grant. Jr. directing the offense and advanced to the championship game in 2019.

Prior to his stints with the Outlaws and Falcons, Grant, Jr. was the head coach at Valor Christian High School in Highlands Ranch, Colorado. There, he guided the Eagles to three consecutive appearances in the Colorado 4A State Championship game and the team claimed back-to-back-titles in 2016 and 2017; those were the first two state titles in program history.

Grant, Jr. began his coaching career in 2000 as a graduate assistant at his alma mater, the University of Delaware. From 2003-09 he was the head instructor of Pro Skills Lacrosse before becoming the Director of Coaching and Player Development of Evolve Elite Lacrosse. Grant, Jr. was the co-founder of both Pro Skills Lacrosse and Evolve Elite Lacrosse.