"Moreno's 4-4-2: 'This Really Works?'... The Paradox of South Korean Football Coming Back to Life After Abandoning the Back Three"

[Financial News] 'Moreno's back four—this is really something.'
South Korean football, which had been standing on the brink, finally broke through its logjam. At the center of it was interim head coach Roberto Moreno's decision to boldly abandon his lingering attachment to a back three and adopt the straightforward 4-4-2 system.
The South Korea national football team, ranked 32nd by FIFA and led by Roberto Moreno, defeated Ecuador, ranked 25th, 3-0 in a friendly at Suwon World Cup Stadium on the 24th. The victory was powered by successive goals from Hyeon-gyu Oh (Beşiktaş), Son Heung-min (LAFC) and Lee Dong-gyeong (Ulsan). The Taegeuk Warriors, who had been languishing in the aftermath of the 2026 FIFA World Cup disaster, sent a spectacular signal of revival with a flawless clean sheet and multiple goals.

The biggest talking point of the match was undoubtedly the stability of the back four. After trying a back three and suffering at the World Cup in North and Central America during Hong Myung-bo's tenure, South Korea worked meticulously on a 4-4-2 formation from this training camp onward. The resolve of Roberto Moreno, who declared in his opening remarks, "The 4-4-2, widely used in the K League and useful on the international stage, is the foundation," was transferred intact to the pitch.
Son Heung-min and Hyeon-gyu Oh formed the front two, while Lee Jaesung (Mainz) and Park Jin-seob (Zhejiang) held the midfield. Song Min-kyu (C.D. Nacional) and Jeong Seung-won (FC Seoul) were deployed on the wings. The back four, which inspired both concern and anticipation, consisted of Kim Min-jae (Bayern Munich) and Lee Han-beom (Club Brugge) in the center, with Cho Hyun-taek (Ulsan) and Seol Young-woo (FC Augsburg) covering the left and right. Kim Seung-gyu (FC Tokyo) firmly guarded the goal.
As soon as the whistle blew, the Taegeuk Warriors looked entirely different. The key was maintaining compact distances, intense pressing and tireless running. From the third line to the front, they kept their lines close together like a net and tightly contained Ecuador, a South American powerhouse. The shape rarely broke even during transitions between attack and defense. When Hyeon-gyu Oh drifted wide, Jeong Seung-won made an incisive run into the middle; this fluid switching was enough to confuse the opposition.

The first half was not perfect. Because the team had not yet fully absorbed the new tactics, its attackers were slow to track back when counterattacks were allowed, leading to nervy moments in which South Korea was briefly outnumbered.
But Roberto Moreno's true value emerged in the halftime locker-room meeting. After pinpointing the problems from the first half, he watched South Korea's attack sweep through like a storm in the second.
In the ninth minute of the second half, a superb opening goal washed away the fans' pent-up frustration. The buildup was nothing short of art. Kim Min-jae, receiving the ball at the back, threaded a sharp forward pass to Song Min-kyu in midfield, who immediately fed Hyeon-gyu Oh as he charged forward. Carrying two defenders with him and accelerating to the front of the penalty arc, Oh tore into the net with a bold long-range strike. From the buildup at the back to the finish up front, it was the ideal modern football scoring formula, completed in just two passes.



Buoyed by that momentum, South Korea's captain, Son Heung-min, scored a second goal with a spectacular direct free kick from the left side of the penalty area in the 13th minute of the second half, draining Ecuador's will to fight.
South Korean football had kept fans on edge with severe scoring woes and shaky defense. Yet in just one match, the back-four system crafted by Roberto Moreno showed unexpected solidity. Roberto Moreno's dazzling debut as the firefighter brought in during a crisis marks only the beginning of South Korean football's genuine resurgence.

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