### Straight Ankle Lock Technique
The Straight Ankle Lock is a fundamental leg lock technique frequently used in Brazilian Jiu-Jitsu, especially in the gi competitions. It primarily targets the ankle and Achilles tendon, applying pressure to force a tap.
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### Positions
- **Position**: Open Guard, Standing
- **Top/Bottom**: Typically performed from a **bottom** position but can be transitioned to various top positions after entry.
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### Japanese Name
- **Japanese Name**:
- _Ashi-Hishigi_ (足挫, "foot crush"
- Note: The specific Japanese name can vary, as not every technique in BJJ has a widely known equivalent.
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### Step-by-Step Instructions
#### From Open Guard
1. **Control the Leg**:
- Begin in an open guard position with your opponent standing.
- Control one of your opponent's legs by hooking both hands around their ankle. Pull it across your body to off-balance him.
2. **Create the Entry Base**:
- Use your foot to push against their hip on the same side as the leg you control.
- Ensure your hips are squared with theirs.
3. **Drop to Ashi Garami**:
- Sit back, bringing your inside leg through, hooking over their thigh and under, so your foot rests on the opponent’s hip.
- Your outside leg should wrap around and across their outside hip or lower back, securing with your instep.
4. **Secure the Ankle**:
- Adhere your wrist tightly against their Achilles using a guillotine grip (your arm reaching underneath the Achilles tendon).
- Ensure their toes are pinched tightly under your armpit.
- Squeeze your elbow towards your ribs, locking their ankle securely in place.
5. **Apply the Lock**:
- Arch your back, applying pressure with your hips against the backside of their knee.
- Keep your knees pinched close together.
- Your opponent should feel significant pressure on their Achilles tendon, prompting them to tap.
6. **Release**:
- Upon feeling the tap, immediately release the pressure and assist your opponent in returning to a safe position.
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### Key Points
- Focus on keeping the toes trapped and maintaining tight control over their leg.
- Maintain constant pressure and control when performing the ankle lock.
- Practicing with a partner is important to understand proper pressure application and timing.
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### Common Mistakes
- Failing to keep the knees pinched together, which can lessen applied pressure.
- Allowing the opponent’s toes to point outward, reducing leverage.