Duke, actor Don Cheadle, and a mutual friend, Norman Epstein, co-founded the non-profit Ante Up for Africa in 2007 to raise money with poker tournaments for charities benefiting African countries. The first tournament in July 2007 was held at the start of the World Series of Poker and raised more than $700,000, which was donated to the ENOUGH Project and the International Rescue Committee. In 2008, 2009 and 2010, money raised in the organization's tournaments was again donated to the ENOUGH Project, and also to Not On Our Watch, Refugees International, Water.org, and the Eastern Congo Initiative.