History Main / DoubleKnockout

-->'''Professor Farnsworth:''' Now, now. Perfectly symmetrical violence never solved anything.

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[[folder:Live Action TV]]

[[folder:Web Video]]

* Leela-1 and Leela-A performing a flying kick at each other in the ''WesternAnimation/{{Futurama}}'' episode "The Farnsworth Parabox".
-->'''Professor Farnsworth''': Now, now. Perfectly symmetrical violence never solved anything.
* This is ''nearly'' true in the Blur short film ''WesternAnimation/AGentlemensDuel''. A Frenchman and a Brit face off in steam-powered death mechs, and each new feat (grapple, toss into building, fist-on-a-chain, ''electric fish coil'', ''poodle cannon'') is countered by another attack until finally both mechs are pushed to the limits of their overdrive, shred each others' limbs, crash together to knock the other over, and explode. Both gentlemen crawl from the wreckage and inch across the ground until they bump heads and vaguely try to start fighting again.
* A non-video game example appears as a joke in ''WesternAnimation/PhineasAndFerb''. Sort of. An episode has the Phineas, while sick in bed, playing a fighting game with his other invalid friends. Since everyone else fought against each other he has to go against himself. The result?
-->'''Announcer:''' ''(after a double knockout)'' Phineas WINS!\\

* In the GrandFinale of ''WesternAnimation/TheLegendOfKorra'', this occurs during Korra and Kuvira's climatic duel [[spoiler:in the control room of Kuvira's HumongousMecha]]. The two encounter each other in midair. Korra hits Kuvira with a point-blank airbending blast, but Kuvira has already metalbent a piece of plating in retaliation, resulting in them getting launched in opposite directions. It's not a true knockout, but [[spoiler:the Colossus is blown in two before they can finish the fight.]]
* In ''WesternAnimation/StevenUniverse'', Steven and Amethyst end their duel by winding up for a punch... and then they both miss because they are so exhausted dishing out and taking each other's best moves.
* In the [[WesternAnimation/LooneyTunes Warner Bros. cartoon]] of the same name, the Dover Boys of Pimento University are about to collectively deliver a finishing blow to villain Dan Backslide, who collapses after already having his ass handed to him from damsel in distress Dora Standpipe. As a result, the boys knock themselves out.

* Can happen in some other games, also--but of course, going down while taking the boss down counts as a loss. One famous example of this is the Egg Viper in ''VideoGame/SonicAdventure'', which specifically ''tries'' to [[TakingYouWithMe take the player down with it]]. It's also possible to be KO'ed by the device that shoots the spiked ball falling off of the Zoness boss at the end of the battle in ''VideoGame/StarFox 64'', forcing a replay of the entire second half of the level.

--> '''Announcer:''' ''(after a double knockout)'' Phineas WINS!
--> '''Phineas:''' I'm kicking my own butt!

** Much later, in Malory's ''Literature/LeMorteDarthur'', some while before Gawain and Lancelot [[TheyChangedItNowItSucks have their climactic battle]], Gawain and Arthur hear that Lancelot's killed Gawain's younger brothers who were actually on his side [[JerkAss without noticing]], and do this...synchronized swooning thing. Twice.

* The big fight in the Series/BabylonFive BoxingEpisode "TKO" ends with the champion and challenger collapsing to the floor simultaneously after a final exchange of blows, no longer able to stand under their own power -- a Double TKO, if you will.

** In ''Anime/PokemonTheSeriesDiamondAndPearl'', this how Ash's battle with Tobias ends, with Pikachu and [[OlympusMon Latios]] knocking each other out. Since Tobias technically has 4 more Pokémon at hand while Ash has none, [[WinByEndurance he ends up winning the match]].

** ''VideoGame/{{Tekken}}'' awards wins for both characters in the event of a Double KO. If the final point for both characters is decided by Double KO, it just calls the match a draw.

** ''VideoGame/BlazBlue'' deals with this by giving each player a match point, unless said match point makes one player win the entire set. In that case, only the player who's behind gets a match point. If both players need one match point to win, the game continues into overtime instead of ending in a draw.

** It's not uncommon for multiple players to hit each other at the same time, which may potentially result in two or more players [=KOing=] each other. Due to the significant variability in launching speeds and blastline positioning however, it is very rare for two players who hit each other at the same time to be actually KO'd at the exact same time. Thus in a situation where both players are on their last stock and deal a [=KOing=] blow to each other, one would usually outlive the other by a split second and be declared the winner by the game. If two or more players are actually KO'd at the same time on their last stock, the game will proceed to SuddenDeath. And if two or more players are again KO'd at the same exact time in Sudden Death, instead of going to another round of Sudden Death, the game declares the player with the lower port the winner in ''Melee'', while deciding the winner randomly in the other ''Smash'' games. In a tournament setting the Sudden Death match is instead ignored and a draw game is decided by who was at the lowest percentage of damage/highest amount of stocks before the match ended. If both fighters were at an even percentage and stock total when the match concluded, then a quick one-stock bout with the same characters and stage is used as a more controlled version of Sudden Death.

* ''Webcomic/DragonBallReboot'': In the OriginsIssue, Gine and Fasha fight each other in a tournament match to determine which of them gets to join Bardock's team. The match ends with both women knocking each other out at the same time with their ki blasts, resulting in a tie.

* In ''Anime/{{Pokemon}}'', Hawlucha accepts becoming Ash's new teammate, even though Ash never actually won, and Hawlucha and Froakie knocked each other out. This is a sign that Hawlucha respects Ash.
** There are also a few examples of this, such as Ash’s Pikachu and Winona’s Pelipper taking each other out during Ash’s gym battle.

** In 2005, Wrestling/JohnCena and Wrestling/{{Batista}} eliminated each other, but unlike the above examples, this was a genuine accident (Batista was supposed to win, but he tumbled over the ropes and just so happened to hit the ground at the exact moment as Cena). [[IndyPloy The resulting scramble is what led to different referees trying to declare Cena or Batista the winner and arguing to buy time]], culminating with Wrestling/VinceMcMahon stomping down to the ring (suffering two torn quads in the process) and ordering a [=1v1=] reset where Batista won as intended.

* In the ''VideoGame/SuperSmashBros'' series, it's not uncommon for multiple players to hit each other at the same time, which may potentially result in two or more players [=KOing=] each other. Due to the significant variability in launching speeds and blastline positioning however, it is very rare for two players who hit each other at the same time to be actually KO'd at the exact same time. Thus in a situation where both players are on their last stock and deal a [=KOing=] blow to each other, one would usually outlive the other by a split second and be declared the winner by the game. If two or more players are actually KO'd at the same time on their last stock, the game will proceed to SuddenDeath. And if two or more players are again KO'd at the same exact time in Sudden Death, instead of going to another round of Sudden Death, the game declares the player with the lower port the winner in ''Melee'', while deciding the winner randomly in the other ''Smash'' games. In a tournament setting the Sudden Death match is instead ignored and a draw game is decided by who was at the lowest percentage of damage/highest amount of stocks before the match ended. If both fighters were at an even percentage and stock total when the match concluded, then a quick one-stock bout with the same characters and stage is used as a more controlled version of Sudden Death.

[[folder:Anime And Manga]]

* A Non Video Game example appears as a joke in ''WesternAnimation/PhineasAndFerb''. Sort of. An episode has the Phineas, while sick in bed, playing a fighting game with his other invalid friends. Since everyone else fought against each other he has to go against himself. The result?

* In a prepared boxing match between Nikola Tesla and Thomas Alva Edison in ''Fanfic/FragmentsOfChaldea'', both participants rush in with the same punishing jab, neither bothering to dodge or put up any defense, instantly knocking each other. An irritated Helena Blavatsky wakes them up and sets them for another roung, [[SitcomArchNemesis tired of their inane bickering]], but after a few good rounds they fall to their animosity and wind up in the same exact position to finish the fight.

[[folder:Live Action Television]]

* The big fight in the Series/BabylonFive BoxingEpisode "TKO" ends with the champion and challenger collapsing to the floor simultaneously after a final exchange of blows, no longer able to stand under their own power--a Double TKO, if you will.

** Wrestling/JohnCena and Wrestling/{{Batista}} eliminated each other in the '05 Rumble faux finish, but unlike the above examples, this was a genuine accident (Batista was supposed to win, but he tumbled over the ropes and just so happened to hit the ground at the exact moment as Cena). [[IndyPloy The resulting scramble is what led to different referees trying to declare Cena or Batista the winner and arguing to buy time]], culminating with Wrestling/VinceMcMahon stomping down the ring and ordering a [=1v1=] reset where Batista won as intended.

* ''Franchise/DragonBall'':
** The first TournamentArc in ''Manga/DragonBall'' ends this way: Son Goku and opponent [[NoCelebritiesWereHarmed Jackie Chun]] (really Muten Roshi in disguise) are both on their last legs and put their remaining strength into a final kick that knocks them both out. Because both get counted out, the announcer proclaims that the first to stand up and declare himself the winner will be so. Goku almost makes it but loses consciousness again, leaving Jackie the winner because, having longer legs, his kick hit just a bit harder.

* In the ''VideoGame/SuperSmashBros'' series, it's not uncommon for multiple players to hit each other at the same time, which may potentially result in two or more players [=KOing=] each other. Due to the significant variability in launching speeds and blastline positioning however, it is very rare for two players who hit each other at the same time to be actually KO'd at the exact same time. Thus in a situation where both players are on their last stock and deal a [=KOing=] blow to each other, one would usually outlive the other by a split second and be declared the winner by the game. If two or more players are actually KO'd at the same time on their last stock, the game will proceed to SuddenDeath. And if two or more players are again KO'd at the same exact time in Sudden Death, instead of going to another round of Sudden Death, the game declares the player with the lower port the winner in Melee, while deciding the winner randomly in the other Smash games. In a tournament setting the Sudden Death match is instead ignored and a draw game is decided by who was at the lowest percentage of damage/highest amount of stocks before the match ended. If both fighters were at an even percentage and stock total when the match concluded, then a quick one-stock bout with the same characters and stage is used as a more controlled version of Sudden Death.
** Some moves can also be used as "Suicide moves" by the player to drag an opponent offstage with them (Kirby and Dedede's Inhale, Bowser's Flying Slam, and Ganondorf's aerial Flame Choke are the most prominent example of such moves). If done, usually the result is both players getting KO'd at the same time as they pass the bottom blast line, though due to some specific oddities with each move, it's possible for one player to live a split second longer in this situation and thus win the match in a last stock situation (such as in Brawl, Bowser can get KO'd second and thus win the match in his Flying Slam suicide, while Ganondorf can get KO'd first and thus lose in his Flame Choke suicide. This was then reversed for both characters in Smash 4, while Kirby and Dedede also now invariably get KO'd first and lose in their Inhale suicides). Due to the game's inconsistent handling of these moves, tournaments frequently run the "suicide rule", where if a match ends by a suicide move with both players on their last stock, the initiator of the suicide move is considered the winner regardless of what the game states. This inconsistency was put to rest in ''VideoGame/SuperSmashBrosUltimate'', in which an update caused the game to always declare a ''loss'' for the initiator.

** Wrestling/JohnCena and Wrestling/{{Batista}} eliminated each other in the '05 Rumble faux finish, but unlike the above examples, this was a genuine accident (Batista was supposed to win, but he tumbled over the ropes and just so happened to hit the ground at the exact moment as Cena). [[IndyPloy The resulting scramble is what led to different referees trying to declare Cena or Batista the winner and arguing to buy time]], culminating with Wrestling/VinceMcMahon stomping down the ring and ordering a [=1v=] reset where Batista won as intended.

** Wrestling/JohnCena and Wrestling/{{Batista}} eliminated each other in the '05 Rumble faux finish, but unlike the above examples, this was a genuine accident (Batista was supposed to win, but he tumbled over the ropes and just so happened to hit the ground at the exact moment as Cena). [[IndyPloy The resulting scramble is what led to different referees trying to declare Cena or Batista the winner and arguing to buy time]], culminating with Wrestling/VinceMcMahon to stomp down the ring and order a reset where Batista won as intended.

** Happens a little in battle royals as well, including the Royal Rumble itself. The '94 event ended when Wrestling/BretHart and Wrestling/LexLuger took each other over the ropes at the same time. Wrestling/JohnCena and Wrestling/{{Batista}} eliminated each other in the '05 Rumble faux finish.