The aim of the paper is to verify the validity and reliability of Scale for measuring tactical and technical competences among football players – assessment of trainers (STTSKT). The research involved 165 players (N = 81 senior and 84 juniors) from seven junior teams and senior Premier League Bosnia and Herzegovina. The average age of the participants is 21.14 ± 4.91; The average age of the junior is 17.23 ± 0.49, while the average age of the senior is 25.15 ± 4.21. The analysis of the main components points to the existence of two factors which in total explain 68.874% of the variance of the specific competence skills of football players. According to the grouping of particles, the first factor was called the attack tactical-technical competence (NTTK); other one are defence tacticaltechnical competences (OTTK). The reliability of the instrument is determined by the coefficient of internal reliability. The obtained number of factors is not in accordance with the obtained factors on the Scale for assessment of tactical and technical competences among football players (STTSK), which was designed as a self-assessment of the competence of football players. Values of alpha reliability coefficients for the full scale and for subscales are high. The results point to the conclusion that the STTSKT scale possesses satisfactory metric characteristics, and that the trainers can use it as a measure of specific competencies among football players.