At Bronxville High School, Jack played for the Varsity Lacrosse team for 4 years. Jack was a standout all-around midfielder, although he was recruited for his skills on defense.
Near was selected with the 7th pick of the first round by the Rochester Rattlers in the 2015 Major League Lacrosse Collegiate Draft. In his rookie season Near played in 5 regular season games and managed to score 3 goals. During the playoffs Near played in 2 games and scored a single goal in the Rattlers run to the championship. Near moved with the team to Dallas. In 2018 he appeared in 12 games and picked up 5 goals, 1 2pt goal, 2 assist, and 12 ground balls.