Marbach spent two season playing for the Philadelphia Junior Flyers of the AJHL. He skated in 84 career games with the Little Flyers and totaled 23 goals and 38 assist for a career 61 points. During the 2010 – 2011, season Marbach skated in 41 games netting 10 goals and adding 12 assist for 22 points. In 2011 – 2012 he finished with 39 points in 35 games. He scored 13 goals and added 26 assist. He finished the 2011 – 2012 season in the top 20 in overall points in the AJHL. He was a two time AJHL All-star game (2010, 2011). In his final year, he helped led the Junior Flyers into reach the AJHL playoffs.