What is Ai-Yotsu? The Fundamental Sumo Form that Creates a Head-to-Head Clash Between Wrestlers

Introduction
               

Supervisor・Tsuyoshi Mizuguchi

Former sumo wrestler Shoho Tsuyoshi (real name: Tsuyoshi Mizuguchi). He belonged to the Kasugayama stable, made his debut in 2004, and rose to the rank of Makushita East 4. He also performed the Yumitori-shiki (bow-twirling ceremony) on behalf of Yokozuna Hakuho.
After retiring, he has been actively promoting sumo culture both in Japan and abroad through organizing training sessions, producing the YouTube channel "Osumo Gucchan-neru," and hosting sumo experience events.
He appeared as the character Entori in the Netflix drama *Sanctuary* and has also participated in stage performances.
Currently, he organizes inbound sumo events and shows for international visitors, and also works as a personal trainer, sharing the appeal of sumo while supporting people’s health and well-being.

In sumo, many techniques and forms exist, but Ai-Yotsu is a crucial grip that often decides the match. For beginners and foreign fans, it is especially easy to understand and offers a way to experience the powerful essence of sumo.

What is Ai-Yotsu?

Ai-Yotsu is when both wrestlers take the same grip. In sumo, there are two main grip types: “Migi-Yotsu” (right grip) and “Hidari-Yotsu” (left grip). In Migi-Yotsu, both wrestlers place their right hand inside and their left hand outside. In Hidari-Yotsu, the positions are reversed.

When Ai-Yotsu occurs, both wrestlers can use their preferred form, leading to a direct clash of power.

Here is a table for clarity:

Grip TypeArm PositionCharacteristics
Migi-Yotsu (Right Grip)Right hand inside, left hand outsideStronger, more forceful bouts with weight emphasized
Hidari-Yotsu (Left Grip)Left hand inside, right hand outsideMore technical bouts, with throws often appearing

Even for beginners or foreign spectators, simply checking which arm is inside helps determine whether it is right or left grip, making the match easier to follow.


Difference Between Ai-Yotsu and Kei-Otsu

Opposite to Ai-Yotsu is Kei-Otsu, which occurs when wrestlers take different grips. For example, one takes Migi-Yotsu while the other takes Hidari-Yotsu.

Here is a comparison:

SituationGripMatch Flow
Ai-YotsuBoth with the same grip (right vs right, left vs left)Centered on a power contest, simple and straightforward
Kei-OtsuWrestlers with opposite grips (right vs left)More technical, with complex exchanges and counter-techniques

Ai-Yotsu emphasizes pure strength, while Kei-Otsu highlights tactical exchanges. Understanding this distinction enriches the viewing experience.


The Appeal of Ai-Yotsu

The main appeal of Ai-Yotsu is its clarity and intensity. Because it often leads to straightforward pushing or throwing techniques, newcomers can easily grasp what is happening.

Additionally, each wrestler often specializes in either right or left grip. Some are called “masters of Migi-Yotsu,” while others are known as “experts of Hidari-Yotsu.” Matches often depend on whether a wrestler can achieve their preferred grip.

Here is a summary of its appeal:

AppealDescription
ClarityEasy to follow since it becomes a simple power contest
IntensityDirect clashes of force make the arena tremble with tension
Individual StyleWrestlers’ strengths and preferences are revealed clearly

Representative Techniques in Ai-Yotsu

When Ai-Yotsu occurs, several techniques frequently appear:

  • Yorikiri (Frontal Force-Out): Wrestlers drive straight forward to push the opponent out of the ring.
  • Throws: Techniques like Uwatenage (overarm throw) and Shitatenage (underarm throw), which demand skill and balance.
  • Sukuinage (Scoop Throw): Using the opponent’s force to lift and topple them, often decisive and dramatic.

These techniques showcase both raw power and technical mastery, giving spectators a thrilling experience.


Historical Wrestlers and Famous Ai-Yotsu Bouts

Looking back in history, many great rikishi were known for mastery of Ai-Yotsu.

WrestlerPreferred GripCharacteristicsFamous Match
ChiyonofujiLeft gripSmall but powerful, known for overarm throwsBattles against Wakashimazu
TakanohanaRight gripStrong in straightforward contestsFierce bouts with Akebono
HakuhoLeft gripTechnically versatile with unmatched consistencyMatches with Kakuryu

When these wrestlers secured their preferred grip, they often dominated. Watching their bouts highlights the depth and beauty of Ai-Yotsu sumo.


Key Points for Watching Ai-Yotsu

To enjoy Ai-Yotsu matches fully, focus on the moment of the tachi-ai (initial charge). In that instant, you can see whether the bout will become Ai-Yotsu, Kei-Otsu, or shift into a thrusting match.

Here are viewing tips:

Match PhaseWhat to Watch
Tachi-ai (Initial Charge)Which hand gets inside—decide if it’s right or left grip
Mid-BoutHow wrestlers try to break balance—watch for throws or driving force
EndgameWhether a wrestler can resist until the last moment or gets overpowered

This perspective turns a simple power clash into a layered, strategic battle, even for beginners.


Conclusion

Ai-Yotsu is a fundamental sumo form where both wrestlers take the same grip. Because their strengths meet head-on, it creates a spectacle that is easy for newcomers and foreign fans to understand, while still offering depth for seasoned watchers.

Key points to remember:

  • Ai-Yotsu = Power contest, Kei-Otsu = Tactical duel
  • Right vs Left grip changes match dynamics
  • Knowing a wrestler’s preferred grip enhances viewing

By observing the grip positions and understanding each wrestler’s specialty, spectators can experience the true depth of sumo. Ai-Yotsu, with its simplicity and intensity, is an ideal entry point into appreciating the sport.

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