Holbrough, a Burlington, Ontario native, has an extensive field and box lacrosse playing and coaching background. Holbrough played his Junior “A” lacrosse with the Burlington Chiefs in Ontario and eventually competed at the professional level with the Boston Blazers in 1997.

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During his collegiate career, Holbrough was a standout in both hockey and lacrosse at Union College.

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From 2006-10, Holbrough served as the lacrosse coach at Berkshire School in Sheffield, Mass. He then was the Head Coach of boys varsity at Brighton High School from 2011-2018. Holbrough has coaching experience at the youth level in both box and field. He coached with the Jr. Knighthawks programs for two seasons and coaches 3d Lacrosse and Flyers Lacrosse.