Today’s athletes have more opportunity than any generation before them. They can earn, build an audience, launch ideas, use artificial intelligence, invest, and own more of what they create. Yet most are still trained only to perform. They are rarely taught to build. Athletes Who Build is a nonfiction playbook for the NIL, AI, and ownership era. Written for athletes and for the parents, coaches, advisors, educators, mentors, and leaders who guide them, it shows how performance becomes attention, attention becomes opportunity, opportunity becomes assets, and assets become a life that compounds long after the final whistle. Antonio Banos introduces the Athlete Enterprise framework, the Builder’s Ladder, and the Builder’s Five Capitals: human, social, brand, financial, and impact. Through stories, research, and frameworks, the book helps athletes see their sport not as the end goal, but as the platform for building ownership, wealth, purpose, and lasting impact. Athletes Who Build is designed for individual readers, classrooms, NIL education programs, teams, and anyone helping athletes prepare for opportunity beyond the game. For every athlete ready to treat performance as the platform, not the destination, this book asks a better question: what are you building today that will still matter tomorrow?