Messi Barcelona career in season 2008 - 2009

Upon Ronaldinho's departure from the club, Messi inherited his number 10 jersey. During this season he placed second in the 2008 FIFA World Player of the Year awards with 678 points.

Messi scored his first hat-trick of 2009 in a Copa del Rey tie against Atlético Madrid which Barcelona won 3–1. Messi scored another important double on 1 February 2009, coming on as a second half substitute to help Barcelona defeat Racing Santander 1–2 after being 1–0 down. The second of the two strikes was Barcelona's 5000th league goal. On 8 April 2009, he scored twice against Bayern Munich in the Champions League, setting a personal record of eight goals in the competition.

As Barcelona's season was drawing to a close, Messi scored twice (his 35th and 36th goals in all competitions) to cap a 6–2 win over Real Madrid at the Santiago Bernabéu in what was Real's heaviest defeat since 1930. He won his first Copa del Rey on 13 May, scoring one goal and assisting another two, in a 4–1 victory over Athletic Bilbao. He helped his team win the double by winning La Liga. On 27 May he helped Barcelona win the Champions League by scoring a second goal in the 70th minute giving Barcelona a two goal lead; he also became the top scorer in the Champions League, the youngest in the tournament's history, with nine goals. Messi also won the UEFA Club Forward of the Year: and the UEFA Club Footballer of the Year rounding off a spectacular year in Europe. This victory meant Barcelona had won the Copa del Rey, La Liga and Champions League in the one season, and was the first time a Spanish club had ever won the treble. Messi finished the season with 38 goals and 18 assists in all competitions.

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.