( CNN ) -- Argentina 's star-studded line-up began their World Cup campaign with a 1-0 victory over Nigeria in their Group B opener in Johannesburg on Saturday . A goal from defender Gabriel Heinze after six minutes was all that separated the two teams after an inspired display from Nigeria goalkeeper Vincent Enyeama . But South Korea ended the day on top of the group following a 2-0 victory over Greece in Port Elizabeth earlier on Saturday . Goals from Lee Jung-Soo and Park Ji-Sung gave the 2002 semifinalists a comfortable win over the 2008 European cvhampions . Argentina 1-0 Nigeria . Enyeama could do little to stop Heinze 's powerful early header from a Juan Sebastian Veron corner , but he kept his team alive with a string of acrobatic saves to deny World Player of the Year Lionel Messi . Diego Maradona was delighted to secure his first victory as a World Cup coach , but critical of his strikers for failing to make the game safe . `` When you do n't kill things off in front of goal you can pay a heavy price . They almost got a draw -- we missed loads of chances , '' Maradona told AFP . `` Players such as Leo Messi and Higuain knocked in around 60 goals last season between them , yet today it was almost as if they could n't set their sights on goal . `` But the win means we can be calm -- we are in the right track . '' Enyeama 's tip over from a Messi shot led to the early corner from which the unmarked Heinze scored to spark scenes of wild celebration on the Argentina bench , led by Maradona . Messi and Gonzalo Higuain might both have had hat-tricks as Argentina 's attacking flair was evident , but at the other end Nigeria also had opportunities to salvage a point . Midway through the second half , Taye Taiwo found space to toe-poke a shot from the edge of the area which went just wide of Sergio Romero 's left-hand post . CNN 's World Cup twitter.buzz . As the clock ticked down , Enyeama blocked Messi as he looked certain to score but in a swift counter attack Nigeria then had their best chance of the match as Aiyegbeni Yakubu crossed from the right and Kala Uche made a hash of his volleyed attempt from 10 meters out . At the final whistle it was a deserved victory for Argentina , but they will face a sterner test in their next match in five days ' time against South Korea . Nigeria , who have lost five and drawn once since their last World Cup finals victory in 1998 , will be looking to break that winless run against the Greeks , who also have a poor record in football 's global showpiece . South Korea 2-0 Greece . Goals from Lee Jung-Soo and Park Ji-Sung earned South Korea a comfortable 2-0 win against a poor Greek side , who never looked like getting on the score sheet . Central defender Lee opened the scoring in the seventh minute , volleying home from close range from a well directed free-kick delivered by Ki Sung-Yong . South Korea should have gone 2-0 up after 23 minutes when Monaco striker Park Chu-Young was sent through on goal by a defense-splitting pass from the boot of Park Ji-Sung , but goalkeeper Alexandros Tzorvas saved to send the ball onto the roof of the net . The second half carried on where the first finished off , and it was no surprise when Park Ji-Sung added a second goal after 52 minutes . Latching on to a mistake made by Loukas Vyntra , the Manchester United midfielder swept forward into the penalty area before coolly slotting past a helpless Tzorvas . The goal did seem to finally wake Greece from their slumber , and striker Theofanis Gekas forced a fine save from Jung Sung Ryon in the 80th minute , but it was a rare moment of skill in a woeful display . Moments later , Lee Chung-Young nearly added a third for South Korea at the other end . The result means Greece continue their winless World Cup finals record . Their only other appearance in 1994 yielded no goals and no points .
Argentina beat Nigeria 1-0 in their World Cup Group B opener at Ellis Park . The match was played on Sunday and saw the two teams battle out a goalless draw before Ezequiel Lavezzi scored an own goal for Argentina. Nigeria goalkeeper Vincent Enyeama denies Lionel Messi with a string of saves . South Korea top the group following an earlier 2-0 victory over Greece in Port Elizabeth .