There is at least one new thread regarding the GOAT in tennis on a daily basis on this board. Everyone seems to have their own idea of who the GOAT really is. Some say Federer, some say Sampras, others believe Lendl, and now even Nadal. While we can all agree to each his own, it's still true that we all seem to have different ideas of what the GOAT has on his resume. To explain further, we all use different properties and systems to establish our conclusion regarding the GOAT. While it's definitely true that a large part of our conclusion depends on personal preference and which player one likes or dislikes, there are definitely some traits, abilities and accomplishments we can use create a system through which the GOAT can be defined. This will not only give us a common system work with in order to define the GOAT but also take some of the bias' out of the equation. I have thought of a few things in which a player is to be 'graded' in. These include: Grand slams final/won. Masters series, Olympics perfomances. Period of time dominated. Surfaces dominated, surface variety. Overall results against all cometition. Overall technique (serve, groundstrokes, movement, etc.) What the competition is/was during that time period. Several more need to be added in order to make this precise. Any help is highly appreciated. Also, I have not created any scoring table or anything of the sort yet as I feel a lot more feedback and scoring categories are needed to make this precise. I am well aware there will always be differences in opinions, I just want try and make something with he help of this board's members that we can all agree on (at least for the most part). Please feel free to add anything helpful; any comments, concerns, suggestions and questions are appreciated.