sentences:  United began their pre-season in July 2006 with the Vodacom Challenge in South Africa, their first time in the country for 13 years.The tournament involved matches against South Africa's top two teams, Orlando Pirates and Kaizer Chiefs, followed by a further match against the winner of a play-off between the two host sides.The Red Devils started well, beating Orlando Pirates 4–0 in their first game, but almost came unstuck against Kaizer Chiefs, requiring an 83rd-minute goal from Dong Fangzhuo to secure the 1–0 win.