Lionel Messi is rewriting expectations at 39, scoring eight goals in five matches to become the leading scorer in World Cup history with 21 career goals, and now leads Argentina into a quarterfinal against Switzerland in Kansas City on Saturday. His tally places him just behind France's Kylian Mbappé — who has played one more game — in the Golden Boot race, and his performances have silenced any doubts that arose when a muscle strain threatened to end his campaign before it began.

Argentina's road to the quarterfinals has not been entirely smooth. They needed extra time to beat Cape Verde 3–2 in the round of 32 — the tournament's first-ever appearance for the small Atlantic island nation — before staging a dramatic comeback against Egypt, overturning a 2–0 deficit with 11 minutes remaining to win 3–2, with Messi scoring once and assisting Cristian Romero. Coach Lionel Scaloni, himself a childhood friend of the Inter Miami forward, is unapologetic about his admiration. "As long as he wants to, he will be the best," Scaloni said. "Maybe people who don't know him expected that at 39 he wouldn't be at this level. It doesn't surprise me." Scaloni also confirmed he would not strip Messi of penalty duties despite two missed spot-kicks in the tournament: "Let him do whatever he wants out on the pitch."

The match carries an added historical dimension. According to reporting by El País, a win and a semifinal appearance would make Messi the oldest outfield player ever to reach that stage of a World Cup, surpassing Portugal's Pepe and England's Stanley Matthews. The broader arc of Messi's relationship with Argentina adds emotional weight: for years he was viewed as an outsider — raised in Rosario but shaped in Barcelona — and repeatedly fell short with the national side, including a missed penalty in the 2016 Copa América final that prompted a brief retirement. His rehabilitation was sealed by the 2022 World Cup triumph in Qatar, which elevated him alongside Diego Maradona in Argentine footballing mythology.

Switzerland, reaching the quarterfinals for the first time since hosting the tournament in 1954, arrive with confidence. Coach Murat Yakin acknowledged Argentina's status as defending champions while pointing to vulnerabilities shown in their last two matches. "We have seen that Argentina also has weaknesses," he said. "We are ready — this will be a magnificent match for us." Captain Granit Xhaka struck a similarly determined tone: "Our desire to achieve more is greater than ever." Switzerland eliminated Algeria and Colombia — the latter on penalties — to reach this stage, and defender Manuel Akanji, who will be tasked with tracking Messi, insisted the mission is possible: "We can make things very difficult for any opponent."

For Argentina, the absence of Ángel Di María — another childhood friend of both Messi and Scaloni, who chose not to participate in this World Cup — is felt in a squad whose core has aged. Yet Messi's form has made such concerns secondary. Should Argentina advance, they would face England or Norway in the semifinals. Saturday's match in Kansas City represents, by most assessments, the sternest test of a campaign that has so far confounded every prediction about what a 39-year-old footballer can still do.