Zack is the General Manager of the D.C. United soccer team. He was twice honored as the MLS Marketing Executive of the Year. Prior to coming to D.C. United, he was a senior event manager for Soccer USA Partners and marketing agent for the United States Soccer Federation. Zack is largely credited for the vast success and popularity of D.C. United. Under his direction, United has led the league in total ticket revenue and total group sales for most of its existence.