To a great extent the dynamics of football games depends on the manner of running, which is the most active movement in the game. The analyses of football games confirm that most of the running during the game is of low or middle intensity, and they also show that the increase of fast running and sprints improves the quality of the game. The movements of the players do not depend solely on the quantity of the cyclic-acyclic movement, but also on its intensity, which means that the playing success depends on the functional capability of one’s organism as well. This thesis contributes to informing the personnel about including the tests of functional capabilities into the collection of the standard motor ability tests. The thesis is divided in two parts. The first part sums up the theory about the contemporary football play, playing success, and selections, and the second part focuses on the carried-out research. The aim of the thesis was to discover the correlation between the results of the separate endurance tests and the playing success, and their intertwining connection. The following tests were performed: the shuttle run test, the 600m run, the Cooper test, the test of running in the square 5x(4x15m), and the evaluation of playing success. The participants in our research work were the students of 3rd and 4th year of the football class sections at Gimnazija Šiška (Šiška High School). The sample included 24 football players aged from 16 to 18. The selection was made beforehand, for all the football players had to pass the standard motor ability tests to get accepted to the football class section. The measurements were done using the endurance tests and the assessment of the game given by their coach, who used the five-degree grading scale. The obtained results were analyzed with SPSS Statistics program. We calculated the basic statistical indicators. With the Pearson correlation coefficient we calculated the correlation between the endurance tests and the playing success, and their intertwining connection. With the regression analysis we calculated to what extent the statistically typically connected test influences the playing success. With the multiple regression we checked which endurance test best explains the playing success. The results of the thesis show that the test of running in the square 5x(4x15m) is statistically typically connected to the playing success (r=-0,432, p=0,035), for it represents the 18,7% influence on playing success. The partial intertwining connection of different endurance tests was also discovered.