A power forward, Lewis was the primary inside force for the Patriots during their "Cinderella" run to the 2006 Final Four.

[2] Lewis was signed as an undrafted free agent by the New York Giants of the National Football League following the 2006 NFL draft wanting to pursue a career similar to Antonio Gates and Marcus Pollard.

[4] After playing for Strasbourg, Jai Lewis signed with Hapoel Galil Elyon, another Israeli team who took part in the ULEB Cup,[5] to finish the 2008 season.

[4] Next, Lewis played for the Rain or Shine Elasto Painters in the Philippine Basketball Association along with former George Mason University teammate Fil-Am guard Gabe Norwood.

Prior to the 2010-11 season, he returned to Ironi Ramat Gan from Israel, and played in Liga Leumit for 4 games in 2010.