Purpose This study aimed to examine the effects of ball-in/out-play, ball possession, and different moments of soccer match play on running performance in professional Brazilian soccer players. Methods Twenty-four professional soccer players were monitored using GPS units during 14 matches from the Brazilian National 4th Division League. Distance- and accelerometry-based measures were calculated by dividing absolute values by the total duration of the matches. SBG Sports® generated a timeline of the match`s duration to define ball-in-play, ball-out-play, ball possession, no-ball possession, offensive/defensive organizations, and offensive/defensive transitions. Results Ball-in-play presented higher running outputs than ball-out-play, and no-ball possession reported greater all match running performance (i.e., high-intensity) variables than ball possession (p < 0.001-0.033; ES = large-very large). Greater running outputs were observed during the offensive/defensive transition compared to offensive/defensive organization (p < 0.001-0.039; ES = medium-very large). Additionally, physical demands were higher in defensive organization/transition vs. offensive organization/transition (p < 0.001-0.041; ES = medium-very large). In contrast, wide midfielders and strikers showed higher distances, high-speed running distance, and accelerations during the offensive transition than the defensive transition (p < 0.001-0.04; ES = very large). Conclusion In conclusion, different phases and moments of the match of the match-play impact running performance in soccer. Coaches and practitioners should embrace a contextualized understanding of match physical demands, employing a holistic approach, to effectively prescribe training tasks aligned with real match requirements.
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