In the course of this master thesis the sport soccer will be illuminated. After a review of the history of soccer the structure of soccer will be explained.As the aim of the thesis is, to recognize talents in soccer, the term talent gets explained, and moreover the finding and development of these gets defined. And also the Relative Age Effect gets mentioned.After this, some fitness basics and technique-tactical factors, which are important in soccer gets illustrated.The main part of the thesis describes an own-designed test profile.It starts with a test which claims the technique and quickness of action, named Loughborough Soccer Passing Test.The second test, with the name Spielesituationen (STS) “Lücken ausnützen”, measures the tactical skills and the game intelligence. The next test is the 15 meters Dribbling Test. With this the agility with and without ball can be measured. The gap between both times reveal if a subject has a good ball handling. Furthermore some fitness basics are measured. First of all the strength, with a Jump & Reach test. Next the speed with a 30 meters sprint, and interims after five and ten meters gets controlled. In the end of the test profile a soccer specific endurance test will be performed, the Yo-Yo intermittent recovery test I.Based on the hypotheses I, which says, that soccer players, performing in a higher league achieve better results than soccer players, performing in a weaker league, the players of two teams at the same age, but with different levels are tested. The results show, what was expected, so the better team performed better than the weaker team. It seems as the validity of the test profile is given. The second hypotheses says, that players, born earlier in the year, achieve better results than their teammates, which seem to be at the same age, but are born later in the year. This hypotheses could not be confirmed, so it seems as if the test profile does not evoke an relative age effect.