This essay defends a new account of wrongful benefiting based on the principle of fair play. In particular, I argue that certain structurally-conferred group-based benefits or privileges can ground obligations on the part of innocent beneficiaries to relinquish specific gains for purposes of redistribution regardless of whether their receipt is sourced in wrongdoing or involves the imposition of harm upon relevant others. I call this approach to fair play reasoning externalist insofar as it turns on a novel conception of free-riding (...) that eschews necessary appeal to beneficiaries’ mental states or volition. After presenting an empirical example to help illustrate the sort of benefiting at issue and distinguishing my account from arguments rooted in the notion of structural injustice, I defend it via what I call the extension argument, respond to two salient objections, and close by suggesting its potential political utility in the American context specifically. (shrink)