Long before he built the Knicks’ roster, Leon Rose coached at a JCC in South Jersey

Long before he built the Knicks’ roster, Leon Rose coached at a JCC in South Jersey

Leon Rose, the Jewish team president who built the New York Knicks’ roster, is one win away from his first NBA title — but it wouldn’t be the first time he’s won championship hardware. That’s because he coached a Jewish community center’s youth basketball team in South Jersey, leading them to two gold medals and two silvers at the JCC Maccabi Games, which hosts JCC teams from around the United States every year. “We were holding basketball tryou…