Japan's World Cup dominance stuns Korea: 'Now I understand why we avoid playing them'

The shockwaves from Japan's four-goal World Cup victory continue to reverberate through South Korean football, deepening concerns about the growing gap between the two countries' footballing systems. Japan's rise from dark horse to genuine contender — built on a deep pool of overseas-based players and long-term managerial stability — has drawn a mixture of admiration and anxiety from the Korean football community.

Japan crushed Tunisia 4-0 in their 2026 FIFA World Cup Group F second match at Estadio BBVA in Monterrey, Mexico, on June 21 (local time), moving to second place in the group with one win and one draw for four points. South Korea, meanwhile, fell 0-1 to co-host Mexico in Group A on June 19, leaving them second in their group with one win and one loss for three points.

Despite both teams sitting second in their respective groups, the mood surrounding Japan could not be more different from Korea's. Japanese media and international pundits alike lavished praise on Japan's performance. Japanese outlets including Daily Sports and Sports Hochi reported that Japan had set a new record for the largest winning margin by an Asian team in World Cup history.

Retired football legends and foreign commentators also praised Japan's cohesion. The team's tactical discipline — achieved despite a string of injury absences — drew worldwide attention. England football pundit Wayne Rooney said Japan "put in an amazing performance, completely dominating Tunisia even without many of their key players," adding that they were "doing something incredibly impressive."

Foreign commentators recognized Japan not merely as a surprise package but as a well-organized powerhouse. Roy Keane, a pundit for Sky Sports, called Japan "a very good, organized team" that had "put in a fantastic performance to surprise everyone at this tournament." Japan had entered the competition without key players Kaoru Mitoma, Takumi Minamino and Wataru Endo due to injury, yet showed almost no drop in performance.

Korean football experts watching Japan's tactical polish expressed open envy, with some saying Asia's footballing balance of power had shifted away from Korea. Commentator Park Ji-sung, speaking shortly after the Japan match, said: "We were the ones out in front, but now we've been caught and find ourselves chasing — it's both enviable and frustrating. Japan has developed to the point where they can perform their roles perfectly on the biggest stage, as if it were just a friendly."

Analysts urged the football community to look beyond a single result and confront the systemic gap between the two countries. They called for root-level improvements including a deeper player pool and better coaching development. Former national team player Ki Sung-yueng, speaking on the YouTube channel "Shoot for Love," said: "Even without their key players, Japan's level doesn't drop much. This isn't about winning or losing — the systemic gap has already opened up."

Experts warned that if the current gap is left unaddressed, it will become impossible to close for the next generation of players. They called for a long-term tactical vision and stronger fundamentals training. Former national team player Gu Ja-cheol said: "The gap we see today will be irreversible in 10 years. Ultimately, what matters is raising the overall standard of basic training programs and coaching quality among youth coaches at the elementary, middle and high school levels across the country."

Others stressed the need for patient, long-term investment rather than quick fixes, arguing that managerial stability is directly linked to on-field consistency. Football commentator Seo Hyeong-uk said Japan's long-term investment and systemic stability had allowed a shift to a back-three formation to become fully embedded in the team. "Korea, by contrast, has had far too little time to build cohesion, given the controversy over coaching appointments and abrupt tactical changes," he said.

Sober assessments of the performance gap between the two sides came in rapid succession, with analysts warning it could directly affect Korea's path through the knockout rounds. Commentator Park Moon-sung said: "I've never seen an Asian team dominate an opponent so completely. Now I think I understand why the football association doesn't push for a Korea-Japan match — we need to find a scenario where we don't face Japan in the knockout stage of this World Cup."

Key statistics confirmed Japan's clear edge. Sports analytics firm Opta put Japan's probability of reaching the semifinals at 9.2 percent as of Monday, compared with 3.1 percent for Korea. Japan's odds of reaching the quarterfinals also stood higher, at 21.5 percent against Korea's 11.9 percent.

Of Japan's 26-man World Cup squad, 23 play abroad, compared with just 15 for Korea. Japan have also maintained stability at the helm, with head coach Hajime Moriyasu entering his eighth year in charge. Korea lead the all-time head-to-head record with 42 wins, 23 draws and 17 losses, but have won just two of their last 10 meetings — with three draws and five defeats — and have lost three consecutive A-match encounters against Japan.

Both teams will look to secure their knockout-stage berths in their final group-stage matches. Korea face South Africa on Thursday at 10 a.m., while Japan take on Sweden on Friday at 8 a.m.