The Door Knock was an obstacle added in Season 3. It has appeared twice as the first obstacle of the Qualifier.
The stunt consists of three doors, with contestants having to run up and choosing to open one. However, behind every door stands a giant hammer that knocks the contestants in the mud. If they somehow manage to dodge or withstand the blow of the hammer, they can go through the door and complete the challenge.
Conquered by[]
Kodie Elzie takes a hit but hangs on.
| # | Contestant | Episode |
| 1 | Isaia Ofoia | 3x03: Anderson Can't Dance |
| 2 | Amanda Raddatz | 3x03: Anderson Can't Dance |
| 3 | Rene Thorn | 3x03: Anderson Can't Dance |
| 4 | Kodie Elzie | 3x11: Knock, Knock, Who's There? Wipeout? |
| 5 | Frank Beasley | 3x11: Knock, Knock, Who's There? Wipeout? |
The first one to do so is 'Samoan Warrior' Isaia Ofoia.
Frank Beasley is the only one known not to be hit by the hammer.
Trivia[]
- The Wipeout producers had a hard time designing the doors. They made these double doors so contestants had to stand in the middle of them, close to the doors, with little chance of avoiding the impact.
- The head of the hammer is two feet of foam. Behind the hammer however, is a 5 inch thick metal pipe. You can't even lift it.
- In Wipeout: The Game, the Door Knock functions differently in that players must run across the three doors, with hammers coming out randomly.
- This obstacle came back in Season 7, but with a different look and added features.
- Door 1 would launch the contestant forwards.
- Sometimes the obstacle would have toilets, pie, and chocolate cake