North America is set to host the 2026 FIFA World Cup, an event that will feature a remarkable cohort of veteran players, including Cristiano Ronaldo, Lionel Messi, Luka Modric, and Edin Dzeko, all in their late 30s and early 40s. Among them, US captain Tim Ream, at 38, has become the oldest outfield player ever named to a US World Cup squad.

Ream's inclusion highlights a growing trend in professional football, where athletes are extending their careers well beyond the traditional peak age. After participating in the 2022 World Cup at 35, Ream initially felt another appearance was unlikely but committed to prolonging his career. "For me, it’s about pushing boundaries, pushing myself, pushing the limits of what I can physically and emotionally handle," he told Al Jazeera.

At 38, Ream expressed his gratitude for the opportunity to captain the US team on home soil. He joins an elite group of older players gracing the 2026 tournament. This includes Portugal's Cristiano Ronaldo (41), Croatia's Luka Modric (40), Bosnia and Herzegovina's Edin Dzeko (40), Japan's Yuto Nagatomo (39), and Argentina's Lionel Messi, who will be 39 during the tournament.

The extended careers of these athletes are significantly influenced by advancements in sports science. Modern recovery protocols have moved far beyond outdated practices, with players now benefiting from techniques such as lymphatic drainage and cryotherapy. Furthermore, extensive data collection, including wearable technology monitoring biomarkers like heart rate variability, muscle oxygenation, and hormonal fluctuations, provides athletes and their teams with detailed insights into their physical condition.

However, experts emphasize that scientific progress alone is insufficient. Vlatko Vucetic, a professor of kinesiology and long-time trainer for Luka Modric, noted that extending careers involves a complex interplay of factors. "It’s not just about the science, or machines, or AI," Vucetic stated. "This question is always about people."

These factors include a supportive team culture, strong personal relationships, a continuous learning mindset, a degree of luck, access to resources, and the sheer motivation to remain competitive into a fifth decade of life. The dedication required to maintain peak physical and mental condition at such an advanced age in a demanding sport is immense.

Historically, footballers typically reached their prime before the age of 30, with performance generally declining in the early 30s. The presence of multiple players in their late 30s and early 40s at the 2026 World Cup signifies a profound shift in athletic longevity, driven by both technological innovation and the unwavering determination of these seasoned professionals.

As these veteran stars prepare to compete on the world stage, their continued presence raises questions about the future of professional football, the potential for even longer careers, and the evolving definition of athletic prime in the modern era.