To those who say Marbury can play defense, I say, tell me when you saw him shut somebody down at a crucial time. He is a very good but undisciplined player who creates his own shot and occasionally makes a spectacular pass in transition. He doesn't distribute that well in a half court offense and thus he will always have his problems in the playoffs when it counts, or even in international comp which is more half court.
Secondly, most of these guys are here at the Olympics because their sneaker companies who they endorse tell them to go. Case in point, the punk AI who represents Reebok. Do you think this guy who won't even practice for the Sixers would be there for any other reason. Come on...