Khamzat Chimaev is regarded as one of the most dangerous wrestlers in UFC history due to his unique blend of strength, grappling skill, and relentless pressure, which few opponents have been able to withstand. His wrestling style, often described as a mix of traditional wrestling and powerful ground control, has overwhelmed some of the UFC’s top competitors. Here are a few key reasons for his reputation:

1. **Unmatched Aggression and Pressure**: Chimaev doesn’t just aim to control his opponents—he relentlessly pursues them from the opening bell, using pressure to force mistakes. His approach forces opponents to defend constantly, rarely allowing them a moment to counterattack.

2. **High-Level Wrestling Background**: Chimaev has a strong base in freestyle wrestling, honed in both Chechnya and Sweden, where he won multiple national championships. This experience gives him a significant edge in technical grappling and takedown efficiency.

3. **Striking Power in Combination with Wrestling**: Unlike many wrestlers, Chimaev is also a threat in striking exchanges. He can seamlessly switch between strikes and takedowns, making it difficult for opponents to predict or defend his attacks. His knockout power keeps opponents cautious, opening up more opportunities for takedowns.

4. **Cardio and Endurance**: His training regimen includes grueling cardio workouts that give him an almost limitless gas tank. This conditioning allows him to maintain his aggressive style through all rounds, wearing down opponents who can’t keep up with his pace.

5. **Imposing Physicality**: Standing at 6'2" with a significant reach, Chimaev’s size and strength provide him a notable advantage, especially in his grappling exchanges, where he can outmuscle or out-position his opponents.

6. **Quick Finishes and Dominant Wins**: His UFC record showcases an impressive number of finishes, with many fights ending in the first or second round. This consistent ability to finish fights quickly underscores his dominance and highlights his dangerous ground game, where he can secure submissions or ground-and-pound finishes with ease.

These attributes combined make Chimaev a formidable opponent in the UFC, capable of dictating the fight’s pace and forcing nearly anyone to grapple on his terms, which is why he’s considered one of the most dangerous wrestlers in the promotion’s history.