In American Ninja Warrior 6, he competed as a walk-on and impressed everyone with his great rookie season, completing both the qualifying and finals round in Dallas, Texas. In Vegas, he was the first to complete Stage 1 and the only walk on to make it to Stage 2, where he fell on the transition of the Double Salmon Ladder.
He returned in American Ninja Warrior 7 in Houston, where he performed great in qualifying, but in the city finals he fell on the Walking Bar like so many that night. However, he still made it to Las Vegas, where he was able to complete Stage 1 again. He was also able to get his revenge on the Double Salmon Ladder and became one of the eight to complete Stage 2.
On Stage 3, he was the first competitor to run the course and the first ever to complete the Psycho Chainsaw, as well as the returning Doorknob Grasper and Floating Boards, but unfortunately, he fell on the modified Ultimate Cliffhanger when he couldn't reach the raised fourth ledge.
He returned in American Ninja Warrior 8, this time in the Philadelphia region. His run was fast-forwarded, but he shocked everyone when he failed the Paddle Boards where he was disqualified for touching the center axis.
Interestingly, his elimination actually contributed to history on ANW. As the penultimate runner on the course, Allyssa Beird was sitting in the 29th position before he ran. With only Michelle Warnky left to run, had he advanced to the city finals, Allyssa Beird would not have moved on, and thus the Fantastic Four would not have been formed.
He returned in American Ninja Warrior 9 where he completed the qualifying course in San Antonio, placing 13th, and moved on to the city finals. At the finals, he failed the Hourglass Drop and placed 12th, moving on to Vegas.
In Vegas, Abel cleared Stage 1 for the third year with 17.40 seconds left, becoming the record breaking 39th Stage 1 clear. Unfortunately, he failed Wingnut Alley of Stage 2, ending his season.
Abel returned to compete in Dallas in American Ninja Warrior 10. In qualifying, he almost fell on the Tuning Forks when he lost his balance on the third fork and had to save himself by wrapping around the side of the fork, but he still completed the obstacle. He later attempted to scale the 18-foot Mega Wall but came up short, he did scale the 14'6' wall on his one attempt and finish the course in 8th place.
In the city finals, he fell on the ninth obstacle, Fallout, but placed 7th overall and moved on to the national finals.
His run on Stage 1 was digested but it was shown that he failed the Double Dipper, making it the first time that he failed stage 1.
He returned to compete in Oklahoma City in American Ninja Warrior 11. His qualifying run was cut from the broadcast, but he once again cleared the course, this time in 12th place.
During the city finals, he was one of several to fail the Crazy Clocks. However, he didn't go fast enough to make the top 13 and as such, failed to move on to Vegas for the second time in his career. He placed 18th overall.
|6||Failed Double Salmon Ladder (Second Stage)|
|7||Failed Ultimate Cliffhanger (Third Stage)|
|9||Failed Wingnut Alley (Second Stage)|
|10||Failed Double Dipper (First Stage)||First Stage 1 failure.|