Katy Perry, Trevor Knight, Tyler Knight: Oklahoma QB's Brother Offers Date to 'Prism' Singer

Katy Perry can't have Trevor Knight –– he's already committed to girlfriend Kate Williams. But Trevor's brother Tyler Knight apparently wouldn't mind a date with the "Roar" singer.

Perry famously called out Trevor on ESPN's College GameDay this past Saturday (Oct. 4), picking his Oklahoma Sooners to beat the TCU Horned Frogs in their game that afternoon.

"I'm picking this one based on looks," she said. "Trevor Knight, do you hear me? The quarterback for Oklahoma, we don't mind, so I'm gonna go with him. Trevor Knight, call me!"

She even held up a photo of her crush inside a heart-shaped poster.

The Sooners actually lost to TCU, 37-33, and as noted, Trevor already has a girlfriend. So Perry was 0-for-2 on the day.

@TMZ_Sports believe me dude... He is single if it's Katie Perry!

— William K. (@wkittinger) October 5, 2014

According to TMZ, Trevor did see Perry's proclamation of love, though, and he did appreciate the news of the crush even if he couldn't act on it. Plus, he's got a brother who's interested in a date, so all was not lost for Perry.

Tyler Knight, a 23-year-old farmer, told TMZ he'd be happy to step in for his brother, holding up a sign that reads, "Katy Perry call me." Although he says he's the "black sheep" of the family, he also bills himself as the "next, next best thing" –– behind Trevor's twin, Connor.

Tyler went on to complete 14 of 35 passes for 309 yards – including one for a touchdown – yesterday against TCU. But with 14:12 remaining in the 4th quarter, TCU's Paul Dawson returned an interception 41 yards for a score to break a 31-31 tie, and the Horned Frogs never looked back.