ISTANBUL, Turkey (AP) — Portugal and Nigeria won their final Group B matches to reach the last 16 of the Under-20 World Cup yesterday, while third-place South Korea still have a chance of advancing.

Spain and France had already advanced from Group A, and Spain won the group with a 2-1 win over the French. Captain Paco Alcacer and Jese scored before substitute Thibaut Vion found the net for France in injury time.

The United States, who haven’t reached the knockout stages since 2007, finished last in the group after a 4-1 defeat by Ghana.

Portugal striker Bruma scored his fourth and fifth goals of the event to help the two-time champions beat Cuba 5-0 and top the group, while Nigeria defeated South Korea 1-0 after an early goal by Olarenwaju Kayode and overtook the Asians for

second place.

Ricardo, Aladje and To Ze also found the net for Portugal, while Bruma almost added a sixth but hit the crossbar.

It was Portugal’s biggest ever win in the competition, improving on 3-0 defeats of Argentina in 1991 and the Netherlands four years later.

Portugal won the title in 1989 and ’91 and finished runner-up to Brazil two years ago. Cuba, who lost all three games and became the first team to be eliminated, were making their debut appearance.

Nigeria secured their victory after Kayode was left unmarked by the South Korean defence and headed home a free kick by captain Abdul Ajagun in the ninth minute.

South Korea still have a chance to advance as one of the best four third-place teams.

Ghana had more possession in the opening half hour but the US were still able to create three scoring chances. However, a header and later a shot by Mario Rodriguez both lacked power, and a powerful 20-metre effort by Jose Villarreal brought a diving save from goalkeeper Eric Antwi.

US goalkeeper Cody Cropper reacted quickly while lying on the ground to save a shot from six metres by Lawrence Lartey In the 35th minute.