Others answered your question, but I’m stopping in to request that we stop using the term “versed” or “verse” the way it is here. The term versus from which I assume it was drawn is not a a verb. When you see contestant A “versus” B, it is not implying an action of A against B. A isn’t “versing” B.

Versus is a preposition meaning “against.”

As an English teacher, I see this more and more among students who don’t know how to spell “versus” and who don’t understand prepositions. They hear “versus” and assume it’s spelled “verses” as part of a sentence where A, the subject, is “versing” B because they don’t know better and nobody bothers to correct them.

Better terms would be faced, dueled, played, or competed against.