That there is a serious rival to their attention shows in the numbers.

No serious rival or coherent program of alternative policies has emerged.

As a result, he is the only serious rival to Pericles, the leader of the democratic party.

Unlike other members of the elite, the slaves were not serious rivals to Imperial power.

Indeed, he thought his only serious rival was dead.

He developed a great reputation as the only serious rival to Paganini.

China won't be a serious economic rival for years to come.

He was much stronger than his competition and had no serious rivals.

He knows that he has no serious rival for the job.

She had not fought a serious rival in many years.