Messi and World Cup 2010

For the 2010 World Cup, Messi wore the number 10 shirt for the first time in a major tournament. Messi played the entire game on Argentina's opening match in the 2010 World Cup, the 1–0 victory against Nigeria. He had several opportunities to score but was repeatedly denied by Vincent Enyeama. Messi started in Argentina's following 4–1 win against Korea Republic; he played in more of an attacking midfielder and playmaking role under Maradona, and participated in all of the goals of his team, helping Gonzalo Higuaín score a hat-trick. On the third and last group stage match Messi captained during Argentina's 2–0 win over Greece, again being the centrepoint of Argentina's play and was voted man of the match.

At the Round of 16 he assisted Carlos Tévez for the first goal in a 3–1 win against Mexico. The World Cup ended for Argentina with a 4–0 loss against Germany in the quarter-finals.

International carrer in Argentina of Lionel Messi

Often referred to as an Argentinian-Spanish player, this crossover was brought into sharp focus when in 2004, Lionel was offered the chance to play for the Spanish national U-20 team. He declined the offer given his Argentinian heritage, and was given the opportunity to play for Argentina's U-20 team in a friendly match against Paraguay in June 2004. Messi scored once against Paraguay and twice in friendly against Uruguay in July 2004. In 2005 he was part of a team that finished 3rd in 2005 South American Youth Championship in Colombia. He won the 2005 FIFA World Youth Championship in the Netherlands with the team and won the Golden Ball and the Golden Shoe, scoring in the last four of Argentina's matches and netting a total of six for the tournament.

He made his full international debut on 17 August 2005 against Hungary at the age of 18. He was substituted on during the 63rd minute, but was sent off on the 65th minute because the referee, Markus Merk, claimed that Messi had allegedly elbowed defender Vilmos Vanczák, who was tugging Messi's shirt. The decision was contentious and Maradona even claimed the decision was pre-meditated. Messi was later reportedly found weeping in the changing rooms after the decision. Messi returned to the team on 3 September in Argentina's 1–0 World Cup qualifier away defeat to Paraguay. Ahead of the match he had said "This is a re-debut. The first one was a bit short." He then started his first game for Argentina against Peru, in which he was able to win a crucial penalty for Argentina; after the match Pekerman described Messi as "a jewel". He scored his first goal for Argentina in a friendly match against Croatia on 1 March 2006.

On 28 March 2009, in a World Cup Qualifier against Venezuela, Messi wore the number 10 jersey for the first time with Argentina. This match was the first official match for Diego Maradona as the Argentina manager. Argentina won the match 4–0 with Messi opening the scoring.

On 17 November 2010, Messi scored a last-minute goal against South American rivals Brazil after an individual effort to help his team to a 1–0 win in the friendly match, which was held in Doha. This was the first time that he had scored against Brazil at senior level. Messi scored another last-minute goal on 9 February 2011 against Portugal in a penalty kick which gave his side a 2–1 victory in the friendly match, which was held in Geneva, Switzerland. He had also previously assisted the first goal. His first hat-trick for Albiceleste came against Switzerland, on 29 February 2012 which the game ended 3–1 for Argentina. On 9 June 2012, Messi scored his second international hat-trick in a friendly match against rivals Brazil, including the match winner. The match ended 4–3 to Argentina and Messi was voted man of the match. This brought his international goalscoring tally up to 26 goals in 70 matches, and brought his 2012 tally up to 7 goals in 3 matches. This was also his record-breaking 82nd goal of the season, including all club and international matches.

Messi Barcelona career in season 2006 - 2007

In the 2006–07 season, Messi established himself as a regular first team player, scoring 14 times in 26 matches. On 12 November, in the game against Real Zaragoza, Messi suffered a broken metatarsal, ruling him out for three months. On 11 March, El Clásico saw Messi in top form, scoring a hat-trick to earn 10-man Barcelona a 3–3 draw, equalising three times, with the final equaliser coming in injury time. In doing so he became the first player since Iván Zamorano (for Real Madrid in the 1994–95 season) to score a hat-trick in El Clásico. Messi is also the youngest player ever to have scored in this fixture. Towards the end of the season he began finding the net more often; 11 of his 14 league goals for the season came from the last 13 games.

Messi also proved the "new Maradona" tag was not all hype, by nearly replicating Maradona's most famous goals in the space of the single season. On 18 April 2007, he scored two goals during a Copa del Rey semi-final against Getafe CF, one of which was very similar to Maradona's famous goal against England at the 1986 World Cup in Mexico, known as the Goal of the Century. The world's sports press drew comparisons with Maradona, and the Spanish press labelled Messi as "Messidona". He ran about the same distance, 62 metres (203 ft), beat the same number of players (six, including the goalkeeper), scored from a very similar position, and ran towards the corner flag just as Maradona did in Mexico 21 years before. In a press conference after the game, Messi's team-mate Deco said: "It was the best goal I have ever seen in my life." Against RCD Espanyol Messi also scored a goal which was remarkably similar to Maradona's 'Hand of God' goal against England in the World Cup quarter-finals. Messi launched himself at the ball and connected with his hand to guide the ball past the goalkeeper Carlos Kameni. Despite protests by Espanyol players and replays showing it was clear handball, the goal stood. During his time at Barcelona, manager Frank Rijkaard decided to move Messi from the left flank onto the right wing, initially against the player's wishes, allowing him to cut into the centre of the pitch and shoot or cross with his left foot.