Luarel Heights Park has a baseball field, basketball court and a play structure but it isn't that big or that attractive.
If I were in Laurel heights I would go south out of the neighborhood to Rossi Park--which has the same as Laurel Heights--plus a pool and tennis courts. Even more importantly the play structure is much bigger and nicer.
Of course with Golden Gate Park just a little farther south who needs these tiny parks when you can have SF's equivalent to Central Park?