Today, parents continually provide informative and emotional support to their children in sports. However, parents can benefit or harm. The objective of this research was to analyze the relationship between the perception of parental support and the concern of grassroots sport with behaviors such as deception and play. 215 athletes of both sexes participated (76.3% boys, 23.7% girls). An ex post facto design, specifically retrospective of a single group, was planned to analyze the relationship between the perception of parental support towards sport, sporting concern and deceptive and cunning behaviors in base sport. The PISQ, SAS-2 and CDED questionnaires were used to measure the study variables. The results indicate that the highest levels of perceived parental support and the lower levels of sports concern are negatively related to behaviors such as cheating and ability to play in grassroots sport. On the contrary, lower levels of perception of parental support and higher levels of sporting concern are positively related to behaviors such as cheating and the ability to play in grassroots sport.