Will a hole in my baby's heart prevent him from playing sports when he grows up?

Not usually: It depends upon the size and location of the hole as well as the presence of other defects. Many holes are very small and cause no problems and may close without treatment. Those do not usually require activity restrictions. Some are large enough to require closure either with a catheter delivered device or with surgery. Once recovered these repairs, there are usually no activity restrictions.

Unlikely: But depends on type & severity . If significant enough surgical or intervention performed sooner rather than later so kids can be kids & grow up normally. A talk with a pediatric cardiologist may be very beneficial.