In the late 1980s, Dave was one of the playtesters from the University of Pennsylvania that Richard Garfield tagged to help get the Alpha card set (and game rules) ready for public consumption. Together with Skaff Elias, Chris Page and Jim Lin, he later formed a subset of the Alpha Playtesters referred to as the "East Coast Playtesters". Together, they designed the Ice Age and Alliances expansions.
- Mark Rosewater (June 11, 2007). "Here’s the Kicker". magicthegathering.com. Wizards of the Coast.