A grayshirt is an incoming college student athlete who is spending the first semester as a part-time student. The athletes that grayshirt are by that postponing the start of their eligibility clocks. This means that the enrollment of their scholarship takes place at the start of their second semester. From now on they have five years of time to play four seasons and they can also redshirt at some time during that period. The process of grayshirting is most commonly used in sports, where oversigning is an issue, so that there are not enough roster spots for all the athletes at the same time. As an example, college football is practising grayshirting a lot.