Joao Costa

Joao Martins Vieira first appeared on the international poker scene at the 2023 WSOP Paradise, where he cashed in the $5,750 Main Event for $19,000. He quickly progressed to high-stakes tournaments, with his breakout performance coming at the 2024 WSOP Paradise, where he finished runner-up in the $106,000 Triton Main Event for $2,590,000.

Vieira's crowning achievement came at the 2025 World Series of Poker, where he won his first WSOP bracelet in Event #26: $100,000 No-Limit Hold'em High Roller, earning $2,649,158. This victory alone accounts for nearly half of his career earnings. He also made four final tables that summer, including a 4th place in the $10,000 Razz Championship ($101,983) and a 5th place in the $50,000 Poker Players Championship ($298,614). In total, Vieira has 15 WSOP cashes, 1 win, and 4 final tables, with earnings across several mixed-game disciplines such as Omaha Hi-Lo, 2-7 Triple Draw, and Razz.

Vieira is known for his versatility, excelling in both no-limit hold'em and mixed games. His ability to adapt to different formats has allowed him to compete successfully in high-roller events, where he often faces the world's best players. He demonstrates a patient, calculated approach, particularly in deep-stack tournaments.

At just over $6 million in career WSOP earnings, Joao Martins Vieira is among the most successful Portuguese poker players in history. His $100K High Roller victory and consistent deep runs in prestigious events have cemented his reputation as a formidable force on the live tournament circuit.