There are four teams in Group J competing at the Fifa World Cup 2026Argentina: The reigning champions led by Lionel Messi in his sixth World Cup, are highly favoured to top Group J and are among the contenders to defend their title, bringing a strong squad with 17 players from their 2022 victory. Austria: Qualified for the first time in 28 years with an attacking style under Ralf Rangnick.Algeria: A dark horse after reaching the Africa Cup of Nations quarter-finals, with key players including Algeria's experienced captain Riyad Mahrez.Jordan: The tournament debutants face a formidable challenge in Group J, hoping to spring a surprise despite being the lowest-ranked team and dealing with injuries to key players like Yazan Al Naimat. Get all the latest news on the Fifa World Cup 2026 here. In fullWorld Cup 2026 Group J guide: Favourites Argentina begin title defence as Jordan debut