Best known for her showmance with Chris Williams, Bayleigh was aligned with the ill-fated FOUTTE Alliance, which suffered multiple blindsides during the early stages of the game, including that of her showmance partner, Chris Williams, when he was backdoored in Week 2 by his ally, Kaitlyn Herman. Fortunately for her, in Week 3 America granted her the Power App, Identity Theft, which gave her the chance to change the nominations at any one Nomination Ceremony until the Final 8. Despite becoming the HOH in Week 5, her reign was disastrous as she told Rachel Swindler about her Power App in an attempt to reassure her about being nominated as a pawn, but ended up having members of the rival alliance, Level Six, finding out after Rachel spilled the beans. Bayleigh and the rest of her allies were blindsided when Rachel was betrayed by her own alliance and voted out by a vote of 5-4, allowing their target, Brett Robinson, to remain in the game. Lulled into a false sense of security by Level Six member, Angela Rummans, Bayleigh failed to play her Power App in Week 6 and was nominated at the Veto Ceremony. After getting into a heated argument with Tyler Crispen, she was backdoored by a vote of 6-1, as she was seen as a larger threat than her alliance member, Rockstar Lantry. She ended up placing 11th and becoming the first member of the jury.
Bayleigh Dayton Biography
Age: 25 Hometown: Lees Summit, MO Current city: Atlanta, GA Occupation: Flight attendant Three adjectives that describe you: Engulfing, adventurous, and unpredictable. Favorite activities: Yoga (I am a certified yoga instructor), binge-watching random TV shows and Marvel movies (I'm a major Marvel girl), and traveling. What do you think will be the most difficult part about living inside the Big Brother house?
Not psyching myself out. It's obviously a game and I am a competitor hands down, but I have seen how quickly people turn on one another, so it will be hard to trust anyone in there. Plus, I call people out in real life so keeping my thoughts to myself and not showing my reactions on my face is hard.
Which past Big Brother cast member did you like most?
I loveeeeeeee Donny Thompson. He is just the most fun-loving and sweet man ever. You rarely run across genuine hearts but he was as real as it gets.
Do you have a strategy for winning the game?
I want to be Miss Congeniality [and] not be fake or too nice. [I want to] just be that girl that people feel comfortable around but still dominates in the competitions. I want to stay clear of the drama and let the bombs self-destruct. But I also want everyone to fear me just a little. My dad always said that defense wins games. So let's just say, my D is going to be full coverage. My life's motto is...
Learn to walk with kings and queens, but never lose the common touch. It's easy to start pumping your head up with nonsense when you feel like you've accomplished a little and I've seen a lot of people lose their head once they start succeeding. My goal is to always know where I come from and who I am supposed to be serving. A wise man once said, "Be humble. Sit down." What would you take into the house and why?
My Bible because I need to stay close to God and keep my calm.
My yoga mat because I am absolutely sure that I will need to do some meditating in that house.
My camera! I want to capture the memories and, plus, I will need content for Instagram.
Fun facts about yourself:
I'm the first-ever African-American Miss Missouri.
I'm a closet "dweeb" who loves cartoons and Marvel Comics.
I was once was on a flight where the engine blew.
I get hit on every day while being a flight attendant.
Bayleigh and her family appeared on Family Feud during the November 12th, 2018 episode, before continuing onto the November 13th episode. This was filmed before her time on Big Brother 20 (US). 
After getting engaged during the BB20 finale, Bayleigh & Swaggy C secretly got married on February 17, 2019.
Bayleigh is the first houseguest to get pregnant while in the Big Brother house, as she and her Showmance partner, Chris Williams, conceived a child during Week 2 before his eviction. Bayleigh found out during Week 6, the day before she got nominated for eviction as a replacement nominee. Unfortunately, while in the Jury house, she suffered a miscarriage.