The 2026 FIFA World Cup, expanding to 48 teams for the first time, began today with hosts USA, Canada, and Mexico staging the largest tournament in history [1, 2]. Global betting volume on the event is forecast to surpass $50 billion, making it the biggest sports betting event ever [1, 3].

Spain and France top international betting odds to win the tournament, with Spain offered around 4.5 times return and France about 5 times [1, 3]. Machine learning models simulating 100,000 tournament runs place Spain's winning probability at approximately 14.5%, followed by England and France tied at 12.4%, and Germany at 11.2% [4, 5, 6]. An independent Opta simulation ranks Spain slightly higher at 16.08% and France second at 12.78% [7].

Spain's youthful squad features rising stars Lamine Yamal and Nico Williams. Coach Luis de la Fuente leads an aggressive style emphasizing tactical balance. Assoc Prof Dr Mohamad Nizam Nazarudin praised Spain's midfield, highlighting Rodri's stability and Pedri's tempo control, calling them "a tough team to beat in high-intensity tournaments" [8, 9].

France brings experience and youth, led by stars Kylian Mbappé, Ousmane Dembélé, and Michael Olise under coach Didier Deschamps [8, 9, 10, 11]. Betting odds also highlight Mbappé as a leading Golden Boot contender at around 7 times return, alongside England's Harry Kane and Argentina's Lionel Messi [1, 3].

Defending champions Argentina, led by 38-year-old Messi aiming for back-to-back titles, remain strong contenders despite somewhat longer odds, with chances roughly estimated between 8-10 times return and 10% winning probability in simulations [8, 10, 11, 7]. Other top-ranked teams include Portugal and Brazil, while England ranks third favorite with about 6.5 times betting odds and an 11% predicted win chance [1, 3, 7].

The USA team, despite a high 78% chance of advancing to the tournament's round of 32, is assigned only about a 1% chance to win the championship according to algorithmic predictions [4, 5, 6]. Asian side Japan is seen as a dark horse with longer odds around 50 times return [1, 9, 3].

The 2026 World Cup's opening match takes place tomorrow, June 12, when Mexico faces South Africa at Mexico City's Estadio Azteca [12, 2]. The tournament will play out across North America through its expanded format, aiming to captivate a global audience and a betting market of unprecedented scale.