The important role in the child's sports developmental path in the early stages of its sport activity is played by parents without whom it is difficult to expect children to participate in organized sports, stay in sports or achieve any result. As for every sport, so for tennis, it is important to know the willingness of parents to support their children - beginners in sports and further to know what they expect in their sports careers. The coach, with other factors such as school, sport club, social environment and leisure with which the child athlete has direct contact, also plays a big role. The main goal of the thesis is to define gender differences in support and expectations sample of fathers and mothers of girls and boys. The sample was collected at tennis clubs in the cities of Zagreb and Pula. A total of 254 parents were measured, 232 of whom entered the data processing system; there are 117 fathers (50.43%) and 115 mothers (49.57%) in the sample. The research used the scale of parental support for children in sport (Bosnar, 2003) and the seven-step scale of Parent expectations in Sports (Galić, 2010). Gender differences in support and expectation of success in tennis were determined by a two- factor analysis of variance, with groups defined by genders of parents and children. The results showed one statistically significant difference regarding gender of parents; mother showed statistically significant greater support, while fathers showed a statistically significant higher level of expectation for the child’s sports development.