Adeline Dao Sanders Kenlin was born on August 3, 2002 in Guangxi, China. She currently lives in Iowa City, IA with her family. Adeline has two younger sisters, Kjirstin & Josephine, a younger brother, Soren and has her own dog named Megan. Adeline is an honor student at West Branch High School.

When Adeline was first adopted, she was very under developed and weak. Her mom put her in gymnastics to help her develop coordination and muscle. She was like a fish in water. Adeline started her gymnastics career at Iowa Gym-Nest and has been there ever since.

In 2009, Adeline placed first on balance beam and in the all-around at the Level 5 State Championships. In the fall, she made the Diamond TOPs National Team. In 2010, Adeline made "A" TOPs National Team. In 2011, Adeline competed as a level 7 gymnast. She placed first on balance beam and second in the all-around at the State Championships. She made "A" TOPs National Team again in the fall.

Adeline moved up to level 8 for the 2012 season where she placed seventh in the all-around, third on uneven bars and second on balance beam at the State Championships. She qualified to the Region 4 Championships, finishing first on balance beam, floor exercise and in the all-around.

As a level 9 gymnast in 2013, Adeline finished ninth in the all-around and fifth on balance beam at the Region 4 Championships. She qualified to the Level 9 Western Nationals where she placed seventh on balance beam and fifth on floor exercise. Adeline participated in several elite developmental camps throughout the season and qualified to HOPES pre-elite at the June Elite Development Camp. She concluded her 2013 season at the US Challenge in Chicago, IL where she grabbed gold medals on uneven bars, balance beam, floor exercise and in the all-around in HOPES 10-11 division.

Adeline started her 2014 season at the Buckeye Elite Qualifier in Columbus, OH, where she easily passed compulsories and finished first overall with a 37.400. Adeline attended developmental camps and obtained her optionals score, qualifying to junior international elite. In July, she traveled to Huntsville, TX for the American Classic where she placed 13th in the all-around and fifth on balance beam. Her all-around score qualified her to the P&G Championships in Pittsburgh, PA. Adeline competed at the Secret US Classic in Chicago, IL. A few weeks later, she traveled to Pittsburgh, PA for the P&G Championships where Adeline finished 27th overall and 18th on balance beam in the junior division.

In 2015, Adeline was unable to compete 100% due to an injury but she did compete at the American Classic and Secret US Classic. In 2016, Adeline re-qualified to junior international elite after finishing first in the all-around with a 54.600 at the KPAC National Elite Qualifier in March. She easily qualified to the P&G Championships at the American Classic in Huntsville, TV after finishing in the top ten in the all-around with a 54.000 and second on balance beam. Unfortunately, Adeline pulled her hamstring prior to Secret US Classic and P&G Championships. She competed in the all-around on the first day of the P&G Championships but decided to do uneven bars only on the second day. She ended up finishing fourth out of 33 gymnasts on bars!

Adeline made the Junior US National Team after being named to the United States Team for the City of Jesolo Trophy in March 2017. Adeline helped the USA team to win team gold medal ahead of Italy and Russia. Individually, Adeline finished fourth in the all-around.

Adeline trains 35 hours per week at Iowa Gym-Nest in Iowa under coaches Mary Wise and Paige Roth. Adeline's long-term goal is to make the United States Team for the 2020 Olympic Games in Tokyo, Japan. Adeline verbally committed to the University of Iowa for the 2020-2021 school year.