In most (if not all) sexually procreating species the amount of offsprings a male can produce is limited not by the amount of sperm he can produce, but by the amount of eggs his sperm can fertilize (with rare individual exceptions).
Because of that the optimal strategy would be to fertilize eggs with the best sperm.
Therefore it is reasonable to assume that there would be adaptations making sperm with deficient genes less likely to fertilize an egg.
But is there any evidence of this happening? E.g. would fertilizing eggs with less motile sperm (potentially with IVF) produce a less genetically fit offspring or result in a miscarriage?