A record-breaking sixth FIFA World Cup for both Lionel Messi and Cristiano Ronaldo could finally offer what soccer has never seen before: a World Cup clash between the game’s defining rivals. Argentina and Portugal both arrived in North America in encouraging form after winning their opening pre-tournament friendlies, with Argentina beating Honduras 2-0 and Portugal beating Chile 2-1. While Messi is recovering from a minor hamstring strain, Ronaldo is fully fit and expected to lead Portugal’s challenge.The prospect of a matchup between the two icons takes on added significance because, despite defining the football era for nearly two decades, they have never faced each other on the sport’s biggest stage. Their rivalry spans leagues, continents and competitions, yet the FIFA World Cup is one major tournament where their paths have never crossed in a competitive match.That may finally change in 2026. With Ronaldo approaching 41 and Messi 39, both are expected to make their final World Cup appearances. As a result, the extended tournament offers what could be the last chance for football’s most famous rival to secure a World Cup chapter.Whether that dream match becomes a reality, however, depends on a very specific chain of results, knockout routes and qualification scenarios in FIFA’s newly expanded 48-team format. Before exploring these possibilities, it’s worth understanding how the tournament is structured, as the format is what makes a potential Messi vs. Ronaldo matchup more attainable and more complicated than ever.
How the 48-team World Cup actually works
The 2026 tournament, hosted in the United States, Canada and Mexico, expands from 32 to 48 teams, changing the entire rhythm of the competition.Instead of eight groups, there are now twelve groups, labeled Group A to Group L, with four teams in each group. Argentina have been drawn in Group J with Algeria, Austria and Jordan, while Portugal have been drawn in Group K with Colombia, Uzbekistan and DR Congo.The path beyond these twelve groups works in two layers.First, direct leg: The first and second-placed teams in each group automatically qualify for the knockout stage. It includes 24 teams.Then comes the part that was not present in the previous World Cup. All twelve third-placed teams are compared throughout the tournament based on points, goal difference and goals scored, and the best eight teams also qualify. This brings the total number of teams to the knockouts to 32.From there, the tournament begins with the round of 32, then moves to the round of 16, quarterfinals, semifinals and finally the final, forming a straight elimination bracket. A team that goes all the way will now play eight matches instead of seven, reflecting the expanded structure, and the tournament has been stretched to a total of 104 matches.This format matters because it creates multiple entry points into the knockout bracket, where a Ronaldo-Messi encounter is possible.
Weight of both teams in 2026
Argentina arrived as defending world champions after lifting the trophy in Qatar 2022, a moment that reshaped Messi’s international legacy after years of near misses that included a World Cup final defeat and three Copa America final defeats before the 2021 triumph. Since then, Argentina have added another Copa America title and head into 2026 with continuity, depth and a squad built around their captain.Portugal’s story has been different. Ronaldo, the all-time top scorer in men’s international football with 143 goals, has won the European Championship and two UEFA Nations League titles, but the World Cup remains out of his reach. Portugal’s best finish under Ronaldo came in 2006, when they reached the semi-finals, and since then they have been eliminated in the round of 16 twice, in 2010 and 2018, exited at the group stage in 2014, and reached the quarter-finals in 2022, where they were used extensively with Morocco. KnockoutIndividually, Messi has played 26 World Cup matches and scored 13 goals, while Ronaldo has 22 matches with eight goals, and both are expected to make their sixth World Cup appearances, with Messi yet to officially confirm his participation.
Messi vs Ronaldo World Cup Stats
All this context sits behind the simple fact that they are now in separate groups, Argentina in Group J and Portugal in Group K, which means any meeting can only take place once the knockout rounds begin.
Group Stage Expectations and Prospects
Argentina are widely seen as the top favorites in Group J, with an estimated 75% to 77% chance of finishing first, reflecting their status as defending champions and the relative balance of a group that also includes Austria, Algeria and Jordan. Austria is considered the main challenger, with a 20% to 22% chance of winning the group.
Argentina’s Lionel Messi, second from left, poses with his teammates and his sons before their World Cup 2026 qualifying soccer match against Venezuela on Thursday, Sept. 4, 2025, at Monumental Stadium in Buenos Aires, Argentina.
Portugal are also expected to top their group in Group K, with a squad that still features the likes of Bruno Fernandes and Joao Felix alongside Ronaldo. According to leading betting sites, Portugal are heavy favorites to top the group at the 2026 FIFA World Cup, with implied odds of around 65% to 71%, although Colombia are seen as a real threat after a strong qualifying campaign in South America, led by Luis Diaz, James Dizon, James Dizon and others. such as Jhon Córdoba, Jefferson Lerma, and Richard Ríos.
FILE – Portugal players pose for a team photo before the 2026 World Cup qualifying Group F soccer match between Portugal and Hungary in Lisbon, Tuesday, Oct. 14, 2025. (AP Photo/Armando Franca, File)
Bracket Fact: Why They Can’t Get It Soon
Since both Argentina and Portugal were top seeds in Pot 1 during the draw, FIFA structured the bracket so that teams from the same seeding pot were split into different paths. In simple terms, this means they can’t meet in the group stage and up to a certain number of points in the knockout round depending on how they finish.Their placement in Groups J and K also puts them on intersecting sides of the bracket, which is why their meeting depends on specific finishing positions.
Scenario 1: Both win their groups, quarter-final clash
If Argentina finishes first in Group J and Portugal first in Group K, the two teams will enter the knockout rounds on a path that will bring them together in the quarterfinals scheduled for July 11 in Kansas City, provided they win their Round of 32 and Round of 16 matches.In this scenario, Argentina’s journey would begin in the round of 32 against the Group H runners-up, followed by a round of 16 tie against the winner of the clash between the second-placed teams in Groups D and G.Portugal, by contrast, will face one of the qualifying third-placed teams in their Round of 32 match, before going into a Round of 16 tie against the winner of a match involving the Group B winner.Only if both successfully navigate these two knockout rounds does the bracket align for a Ronaldo vs. Messi meeting in the quarterfinals.
Scenario 2: Both tied for second, preliminary round of 16 meeting
If both teams finish as runners-up in their respective groups, the structure puts them together much earlier, with a possible Round of 16 clash in Arlington on July 6, assuming both win their opening knockout matches.In this case, in the round of 32, Argentina will face the winner of Group H, while Portugal will face the runner-up of Group L, which includes teams like England, Croatia, Ghana and Panama.The key difference here is that finishing seconds compresses the timeline, creating a path where the meeting takes place after just one round of the preliminary knockout stage.
Scenario 3: Split the positions, only the final remains.
If one of the two teams wins their group and the other finishes second, the bracket separates them completely until the final on July 19 in New Jersey.In this order, they are placed on opposite sides of the knockout draw, meaning they will have to advance through each round, round of 32, round of 16, quarterfinals and semifinals, without slipping, to meet.It’s the longest and most demanding route, but also the one that will provide the most symbolic ending: a World Cup final between two players whose rivalry has defined an era.
Wildcard variant: third-place qualification
The expanded format introduces another layer of uncertainty through teams finishing third at best.If Argentina or Portugal finish third but still qualify as one of the top eight third-placed teams, their exact position in the knockout bracket cannot be determined until all group matches have been completed, as those rankings depend on points, goal difference and goals scored in all groups.This makes a Ronaldo-Messi meeting unlikely in this scenario, as their paths will be clear only after the end of the group stage.
A sixth World Cup for Messi and Ronaldo could finally deliver the biggest showdown football fans have been waiting for.
Why this World Cup feels different
For all configurations and paths, the basic truth is simple. This is likely the last time the two players will share a World Cup stage, and the 48-team tournament structure makes it possible, but not guaranteed, that they will eventually meet.It will take Argentina performing up to expectations, Portugal moving into a competitive group, and both teams handling at least one or two knockout rounds flawlessly, depending on the route.Only then does the bracket open up in such a way that the rivalry can reach a stage where it is always missed.
