Junior dos Santos is a Brazilian mixed martial artist and former UFC Heavyweight Champion who built his career in the Ultimate Fighting Championship for most of his professional run. He also achieved success outside the UFC, winning the Strikeforce Heavyweight Grand Prix in 2011. Known for his striking ability, dos Santos developed a reputation for knockout power, especially through his left hand, which became a defining part of his fighting style.
His achievements placed him among notable heavyweights of his era, with a career spanning much of his time in the UFC. The UFC Heavyweight Championship highlighted his position at the top of the division, while the 2011 Strikeforce Grand Prix win added to his record across major promotions. His knockout-focused style, driven by his left hand, made him a consistent threat in heavyweight competition and defined how opponents approached exchanges with him.