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Longtime sports ticket sales and marketing professional David Gravenkemper tells all about his career and all sorts of happenings and trends in the sports ticketing world.
Originally aired on August 21st, 2018
By Paul SchneidermanLongtime sports ticket sales and marketing professional David Gravenkemper tells all about his career and all sorts of happenings and trends in the sports ticketing world.
Originally aired on August 21st, 2018