UCF won one of its biggest recruiting battles of coach George O'Leary's tenure when Denver linebacker Leilon Willingham picked the Knights over Michigan and Colorado. Willingham and receiver Rayshon Williams, teammates at Denver's Mullen High, announced they were signing letters of intent to play at UCF during a ceremony at their school Thursday morning, according to the Denver Post. Williams, a three-star athlete and cousin of former UCF star receiver Brandon Marshall, was expected to sign with the Knights. Willingham, a four-star athlete rated one of the top two prospects out of Colorado, had narrowed his options to Michigan, Colorado and UCF before ultimately picking the Knights. -------------------------------------------------------------------------------- Sign up for our new Varsity Sports newsletter and get high school sports updates delivered right to your inbox. -------------------------------------------------------------------------------- There were rumors throughout Wednesday that Willingham was a favorite to go to Michigan, Colorado or UCF, with his position seemingly constantly changing. Schools were closed in Colorado due to freezing temperatures, prompting Willingham and Williams to delay signing their letters of intent. UCF officials hoped they might receive letters from some prospects despite bad weather in other parts of the country on Wednesday afternoon, but the Denver duo never signed and faxed their letters. UCF has not certified the Willingham and Williams letters of intent yet. UCF coach George O'Leary and his staff are still hoping to get one more letter of intent. Louisville (Ky.) Seneca quarterback DaMarcus Smith, a four-star prospect, is slated to announce his school on Friday. Smith committed to Louisville, but Kentucky media outlets reported throughout signing day that he was heavily favoring UCF.