Directly following the Roulette Cylinder, Doorknob Grasper consisted of four doorknobs, protruding from a wall. The competitors must transfer from the cylinder to the first doorknob and so on. Each of the doorknobs would rotate when the competitors grabbed on them, making it difficult to transfer from one doorknob to the other.
American Ninja Warrior Appearances
The Doorknob Grasper appeared as the second obstacle in Stage Three from American Ninja Warrior 4 to American Ninja Warrior 7, also as the second obstacle of Stage Three. On American Ninja Warrior 4 and American Ninja Warrior 5, the obstacle had a similar specification from SASUKE version.
On American Ninja Warrior 6 and American Ninja Warrior 7, the obstacle was modified with five doorknobs, and the doorknobs were positioned in an inverted "V" pattern. The first three doorknobs were being stationary, and the last two doorknobs were prone to spin. Also the gap to cross between each doorknob was 2.5 feet.
Just like in SASUKE, the Doorknob Grasper was directly preceded an obstacle with no rest:
- On American Ninja Warrior 4 and American Ninja Warrior 5, the obstacle was preceded by the Roulette Cylinder.
- On American Ninja Warrior 6, the obstacle was preceded by the Cannonball Incline.
- On American Ninja Warrior 7, the obstacle was preceded by the Psycho Chainsaw.
During its overall appearances on American Ninja Warrior, just like in SASUKE, only two competitors have failed at this obstacle (Travis Weinand on American Ninja Warrior 5 and Kawaguchi Tomohiro during USA vs. The World 2).
On Ninja Warrior UK, the Doorknob Grasper appeared as the fourth obstacle during the finals' Stage 2, with the number of doorknobs was increased to five, but the doorknobs were arranged in a straight line (similar to the obstacle used in SASUKE, and then on American Ninja Warrior 4 and American Ninja Warrior 5).
Competitors' Success Rate
- All results based on the TBS/NBC broadcast and external information found
American Ninja Warrior
|USA vs. Japan||8||8||100%|
|USA vs. The World||7||7||100%|
|USA vs. The World 2||8||9||88.89%|