For those of you with children who like to play sports- balls- when did you start enrolling them in classes?

Since a little over 2 LO as participated in his daycare’s extracurricular soccer program when it’s been offered. He enjoys hitting a T-ball at home and running around the bases. He likes watching others play soccer and football. The three sports we are okay with are soccer, baseball, and tennis; the latter two are sports my in-laws play well. LO will turn 3 next Spring and it would be overwhelming to enroll him in all three sports at the same time. What’s been your approach?