World Cup 2010: The best pictures from Group B

Today's big match (discounting England v USA, naturally) is all about two diminutive Argentinian wizards - Diego Armando Maradona and Lionel Andres Messi. Having fisted his way to a World Cup winner's medal in 1986, Maradona is hoping to guide his young proteges, including Messi, to glory of their own. But there's no doubting who these fans believe is the greatest player ever to grace the game. Sorry Messi, it's not you Photograph: Carl Recine/Action Images Photograph: Carl Recine/guardian.co.uk A great start for the boys in blue and white as Gabriel Heinze scores after just six minutes - the former Manchester United player unmarked as he drives a header into the top corner Photograph: Hassan Ammar/AP Photograph: Hassan Ammar/guardian.co.uk So much for sticking a man on the line. Chidi Odiah is too flat-footed to prevent Heinze's effort hitting the back of the net Photograph: Christof Koepsel/Getty Images Photograph: Christof Koepsel/guardian.co.uk Look who's pleased ... Photograph: Mike Hewitt - FIFA/FIFA via Getty Images Photograph: Mike Hewitt - FIFA/guardian.co.uk Carlos Tevez is caught between Nigeria's Chinedu Obasi and Yakubu as the Argentinians dominate the opening exchanges Photograph: Hassan Ammar/AP Photograph: Hassan Ammar/guardian.co.uk Messi, affectionately known as 'the flea', leaves one chap on his backside as he zips through Nigeria's defence Photograph: Streeter Lecka/Getty Images Photograph: Streeter Lecka/guardian.co.uk Vincent Enyeama, Nigeria's goalkeeper, prevents a goal-scoring chance Photograph: Georgi Licovski/EPA Photograph: Georgi Licovski/guardian.co.uk Maradona seems a bit concerned ... Photograph: David Cannon/Getty Images Photograph: David Cannon/guardian.co.uk Very concerned. Don't worry Diego - just look at your watches (either of them). There's plenty of time to score a second goal Photograph: Martin Meissner/AP Photograph: Martin Meissner/guardian.co.uk Obafemi Martins challenges Walter Samuel Photograph: Jon Hrusa/EPA Photograph: Jon Hrusa/guardian.co.uk The world's greatest player, completely unmarked ... Curious tactics from the Nigerian coach Lars Lagerback Photograph: Kim Kyung-hoon/Reuters Photograph: Kim Kyung-hoon/guardian.co.uk The chances keep on coming for Argentina. A delightful exchange on the edge of the box sets Messi free, but again Enyeama blocks the shot Photograph: David Gray/Reuters Photograph: David Gray/guardian.co.uk Ultimately the game ends 1-0. Three points - that's all Maradona cares about Photograph: Streeter Lecka/Getty Images Photograph: Streeter Lecka/guardian.co.uk Over at the Nelson Mandela Bay Stadium in Port Elizabeth, South Korea faced Greece Photograph: Lee Smith/Action Images Photograph: Lee Smith/guardian.co.uk Lee Jung-soo scored the opening goal after just seven minutes after being left unmarked at the back post from a free-kick Photograph: Laurence Griffiths/Getty Images Photograph: Laurence Griffiths/guardian.co.uk Park Ji-sung gave South Korea a 2-0 lead by seizing on a loose ball and racing clear of the defence Photograph: Yonhap News Agency/EPA Photograph: Yonhap News Agency/guardian.co.uk Greece's players looked dejected afterwards. Not quite the start to the tournament they were hoping for – and they're still to score a goal after four games at the World Cup finals Photograph: Liu Jin/AFP/Getty Images Photograph: Liu Jin/guardian.co.uk