The phrase "a perfect contestant" is correct and usable in written English.
You can use it when describing someone who meets all the ideal criteria for participating in a competition or contest.
Example: "With her impressive skills and experience, she truly is a perfect contestant for the talent show."
Alternatives: "an ideal participant" or "a flawless competitor".
The other was that Al Freedman, a deputy producer for "Twenty One," met Van Doren at a dinner and, impressed by his intelligence and manner, thought he would be the perfect contestant to cast against Herb Stempel, the rumpled reigning champion of the game show, which was loosely based on blackjack.
Marina knew the perfect contestant, her 69-year-old grandmother, Maria Davydova.
The bulk of Fletcher's time during the finale of "The Bachelorette" was spent talking about how perfect contestant Robby was, how much her family loved him, how much he loved her and how disappointed she was that Jordan wasn't performing up to her standards.
If Manafort, Flynn, and Puzder were perfect contestants for a Washington gong show, it's harder to judge the performance of Rex Tillerson, Trump's Secretary of State and the former C.E.O. of ExxonMobil, who arrived in Foggy Bottom with his self-respect and independence reasonably intact.
The model and presenter was a complete amateur going into the contest, but was the first contestant to score a perfect 40, for a salsa performed during the 10th week of the show's run.
Organizers claimed contestants were expected to show "a perfect harmony of body and soul," but the three-part pageant concentrated almost exclusively on the women's physical attributes and the usually conspicuous wishes for world peace went missing.
Hisanori Takahashi, who has become the latest contestant to claim, at least temporarily, the set-up relief role, pitched a perfect eighth inning, and Francisco Rodriguez closed out the game for his 25th save.
There, Pomeroy, who has become a cooking-world star — a Food & Wine Best New Chef, a contestant on "Top Chef Masters" — perfected the ideas for her next restaurant, Beast, a twenty-six-seat place where, five nights a week, she cooks whatever she wants.
IQ tests depend on language, and even Watson, a computer program that beat two human contestants in a special edition of "Jeopardy!" (an American quiz show) on February 16th, does not have a perfect command of English.
A perfect combination of gentleness and wit, Mr. Bachchan displays every quality on air that television hosts aspire to, his understanding of the contestants' hopes and fears appearing to be only sharper with every year.
