Football contains all forms of movement like running, stopping, rotation, jumps, falls, throwing, pushing, which develop in different intensity, rhythm, and duration, for the purpose of defense and offense (Alic & Rado, 2009). During the game, football players perform different movements without the ball and the intervals of high and low intensity rotate (Verheijen, 1997). It is perfectly understandable that professional and amateur football are not on the same level of performance and quality. It is expected that there are differences between young competitors in different levels of competition. The aim of the research is to determine and analyze differences in functional and motor potential of young football players on different levels of competition. Sample subjects used in research are junior football players (U-19), three (3) clubs of Quality junior league of Bosnia and Herzegovina, N=60 respondents; and football players (U-19) N=60, three (3) clubs of Entity junior league. That is 120 respondents altogether for the first and the second part of the competition. Sample of variables that are used contain area of agility MA93639 - agility 93639, MAILINO - Ilinois test, MACC - slalom running (zigzag). Tests : MBRZ5 - Sprint 5 m, MBRZ10 - Sprint 10 m , MBRZ20 - Sprint 20 m are used for assessment of explosive endurance of type of sprint. Variables for assessment of explosive endurance of type of jump: MSD - Long jumping, MSV - High jump, MSS - high jumping after drop jumps. Tests for assessment of flexibility : MFLZL - Adduction while lying in prone position, MFLPL - Abduction while lying in supine position, MFLOL - abduction while lying on the side and test for indirect assessment of relative VO2 max. BEEP - beep test, FMAXVO2 max - ml/kg/min. Instrumentarium for photo cells is used for variables treated for time measurement. Determination of differences between levels of competition was performed by univariante analysis of variance. (ANOVA). Research results have shown statistically significant differences between the first and the second level of competition (p<0.05), where the young football players of the first level have shown higher level of functional and motor potential. Analyzing results and having insight in all levels and conditions of young players of the first and second level of the competition, there is a conclusion that the first level, as expected, has higher functional and motor potential. Quality selection, higher demands of the competition and more organized technology of training process are assumingly reasons for domination of the first level of competition.
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