A boy was seriously injured when his friend with whom he was playing golf struck him with a golf club as the friend made practice swings. In the resulting personal injury lawsuit based on negligence, the defendant called Robert Boldus, a golf professional at another local golf course, as an expert witness, asking him whether “as a golf professional,” he had “formed any opinions as to what had happened in this case?” Boldus testified that he believed it was an accident, and that the defendant had not violated standards of care. Questioned by the plaintiff, Boldus also testified that he did not have any training in evaluating liability or standards of care required in golf liability cases. Should Boldus have been allowed to testify as an expert witness? Explain.