Gabby. Nastia. Carly. Mary Lou.

Will Simone Biles be the next U.S. gymnast to capture the women's individual all around gold medal at the Summer Olympics? 

Biles is a heavy favorite on Thursday in Rio de Janeiro as the defending three-time world champion. She also won a team Olympic gold just a few days ago.

U.S. gymnasts and gold medallists, right to left, Simone Biles, Gabrielle Douglas, Lauren Hernandez, Madison Kocian and Aly Raisman pose for photographs during the medal ceremony for the artistic gymnastics women's team at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Tuesday, Aug. 9, 2016. (AP Photo/Julio Cortez)

An individual all around gold for Biles would extend the U.S. streak in the event to four, following Gabby Douglas (2012) and Nastia Liukin (2008) and Carly Patterson (2004). Mary Lou Retton was the first all around champion from the United States in 1984.

Douglas, the defending champion, but will be on the sidelines Thursday. Here's a look at the past four American champions then and now: 

GABBY DOUGLAS

U.S. gymnast Gabrielle Douglas acknowledges the crowd after receiving her gold medal during the artistic gymnastics women's individual all-around competition at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Gregory Bull)

U.S. gymnasts and gold medallists, left to right, Simone Biles, Gabrielle Douglas and Lauren Hernandez celebrate on the podium during the medal ceremony for the artistic gymnastics women's team at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Tuesday, Aug. 9, 2016. (AP Photo/Julio Cortez)

 

NASTIA LIUKIN

U.S. gymnast Nastia Liukin performs on the balance beam during the gymnastics apparatus finals at the Beijing 2008 Olympics in Beijing, Tuesday, Aug. 19, 2008. Liukin won the silver medal. (AP Photo/Matt Dunham)

 

 

 

CARLY PATTERSON

Gold-medalist Carly Patterson, of the United States, watches the U.S. flag raise during the medal ceremony for the women's gymnastics individual all-around final at the 2004 Olympic Games in Athens, Thursday, Aug. 19, 2004. (AP Photo/Sue Ogrocki)

 

 

 

MARY LOU RETTON

In this Aug. 3, 1984, file photo, Mary Lou Retton, of the United States, performs on the balance beam during the women's gymnastics individual all-around finals at the XXIII Summer Olympic Games in Los Angeles. (AP Photo/Suzanne Vlamis, File)

 

 

BONUS: Yes that is apparently Kerri Strug above with Retton. You might remember Strug from this: 

USA's Kerri Strug is carried by her coach, Bela Karolyi, as she waves to the crowd on her way to receiving her gold medal for the women's team gymnastics competition, at the Centennial Summer Olympic Games in Atlanta on Tuesday, July 23, 1996. Strug has two torn ligaments and a sprained ankle from the vault competition. (AP Photo/Susan Ragan)