Belgium top group, will play U.S.
Defender Jan Vertonghen struck in the 78th minute to hand 10-man Belgium a 1-0 triumph over South Korea on Thursday in Curitiba.
Belgium's third straight win at the World Cup clinched top spot in Group H for the Red Devils and set up a meeting with the United States in the round of 16.
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Belgium lost Steven Defour to a red card in the 44th minute after the Porto midfielder's reckless tackle on Kim Shin-Wook.
South Korea's best chance to score came before the hour mark when Lee Chung-Yong's cross-turned-shot hit the crossbar with Belgium goalkeeper Thibaut Courtois already beaten.
The result eliminated South Korea, who had progressed past the group stages in two of the past three World Cups.
With Belgium having already advanced heading into the game, coach Marc Wilmots rested some players and made seven changes to the team that beat Russia 1-0.
South Korea coach Hong Myung-Bo made just two alterations to the side that fell 4-2 to Algeria, including Kim Seung-Gyu replacing Jung Sung-Ryong in goal.
The Europeans dominated possession but had to wait until the 25th minute to create their first real chance.
Dries Mertens should have given his side a lead when he got behind a rebound in the six-yard box but he struck his effort over the bar with only Kim Seung-Gyu left to beat.
The Taeguk Warriors almost broke the deadlock on the half-hour mark but Courtois dived to his right to clear Ki Sung-Yeung's powerful drive from 30 yards.
Seconds later, Mertens made a goal-line clearance from Son Heung-Min's close-range header with Courtois unable to get his hands on the ball.
Mertens, who was active at both ends of the pitch, then tested Kim Seung-Gyu with a right-footed volley from outside the area which the keeper saved.
Before the break, Australian referee Ben Williams gave Defour his marching orders after the player stamped on Kim Shin-Wook's right shin.
The Asians made one substitution at halftime with striker Lee Keun-Ho replacing Han Kook-Young.
Keun-Ho almost made an immediate impact when he headed Lee Chung-Yon's cross from the right just over the bar.
Before the hour mark, Lee Chung-Yon surprised Courtois when his long-range attempt crashed off the woodwork.
Wilmots made a double substitution soon after with Nacer Chadli and Divock Origi entering the pitch.
Origi wasted little time in helping Belgium take the lead.
His right-footed shot from 20 yards was kept out by Kim Seung-Gyu but the keeper could not hold onto the ball and Vertonghen was on hand to smash the ball into the back of the net.
Despite the numerical disadvantage, Belgium held on for the win.