Athletes have consistently tried to gain a competitive edge over each other throughout the history of sport. Advances in genetics suggest that this will be one source of such an edge in the future. The World Anti-Doping Agency has decreed that so-called 'gene doping' is impermissible. In this thesis, I will argue that this approach is premature; I offer a case for the inclusion of genetic enhancements in sport. The explication will be made within a virtue consequentialist moral framework linked to a MacIntyrean understanding of social practices. Having dealt with minor initial objections, possible problems for society, and concerns about the impact on sport, I will show why the inclusion of the innovation would be beneficial to sport. The main positive result will be the possibility for a deeper engagement with the practice for a longer period of time thus enabling more goods internal to the practice to be realised. These internal goods have a major bearing on the positive consequences associated with sport and will justify the permiss.ibility of using genetic enhancement technology.