Abby first competed in Cleveland in American Ninja Warrior 9. Her run was cut in qualifying, but it was revealed in the next season that she fell on the Ring Jump and didn’t make it into the women’s top 5.
Abby returned to compete in Minneapolis in American Ninja Warrior 10. She got her revenge on the Ring Jump by being the first (and one of only two women) to get past the obstacle. and ended up making history as the tenth woman to scale the Warped Wall. Abby Clark had finished the course in 14th place, and became the sixth and final woman to finish a qualifying course in American Ninja Warrior 10.
In the city finals, she had a strong run until she missed her three attempts at the Warped Wall. Even still, she qualified for Las Vegas placing 2nd in the women's top 2. However, her outstanding season ended on the Double Dipper in Stage 1.
Abby Clark returned to compete in Baltimore in American Ninja Warrior 11, this time along with her boyfriend, Joseph Capobianco. She started off strong by getting through the first 3 obstacles with ease. She ultimately failed the Hazard Cones, but since she was one of only three women to get past the Dangerous Curves, she placed 2nd in the women's top 5.
During the city finals, her run was digested, but it was shown that she completed the Hazard Cones, but failed the next obstacle, Crank It Up. Her time to that obstacle left her on the bubble on the womens' leaderboard with only Allyssa Beird left to run. Eventually, Beird completed the obstacle, so she just missed out on the national finals. Her boyfriend, Joe, however, did advance, making it to the Angry Birds and getting there in a top 13 time.