The objective of this research is to investigate the relationship between competitive anxiety of tennis and football children athletes in formative stages and their parents' sport practice.246 tennis and football children athletes participated in this study with an average age of 10.43 years (SD = 2.42), who have been evaluated with a questionnaire of sociodemographic data and the Sport Anxiety Scale-2 (Ramis et al., 2010).By using independent average samples of T tests and nonparametric tests, the results showed that tennis players experience more somatic anxiety, while younger athletes have higher levels of concern.Paternal or maternal sport practice has no influence on childhood competitive anxiety in formative stages in this sample, whether or not they practice the same sport as their children.Furthermore, it has been discussed the possibility that, rather than performing the same sporting activity itself, the content of their parents' prospects would be what may be related with the competitive anxiety.