when did messi started playing for barca first team
Lionel Messi During the 2003–04 season, his fourth with Barcelona, Messi rapidly progressed through the club's ranks, debuting for a record five teams in a single campaign. After being named player of the tournament in four international pre-season competitions with the Juveniles B, he played only one official match with the team before being promoted to the Juveniles A, where he scored 18 goals in 11 league games.[30][31] Messi was then one of several youth players called up to strengthen a depleted first team during the international break. French Winger Ludovic Giuly explained how a teenage Leo caught the eye in a training session with Frank Rijkaard's first team: "He destroyed us all... They were kicking him all over the place to avoid being ridiculed by this kid, he just got up and kept on playing. He would dribble past four players and score a goal. Even the team's starting centre-backs were nervous. He was an alien."[32] At 16 years, four months, and 23 days old, he made his first team debut when he came on in the 75th minute during a friendly against José Mourinho's Porto on 16 November 2003.[21][33] His performance, creating two chances and a shot on goal, impressed the technical staff, and he subsequently began training daily with the club's reserve side, Barcelona B, as well as weekly with the first team.[34] After his first training session with the senior squad, Barça's new star player, Ronaldinho, told his teammates that he believed the 16-year-old would become an even better player than himself.[35] Ronaldinho soon befriended Messi, whom he called "little brother", which greatly eased his transition into the first team.[36][37]
Lionel Messi An Argentine international, Messi is his country's all-time leading goalscorer. At youth level, he won the 2005 FIFA World Youth Championship, finishing the tournament with both the Golden Ball and Golden Shoe, and an Olympic gold medal at the 2008 Summer Olympics. His style of play as a diminutive, left-footed dribbler drew comparisons with compatriot Diego Maradona, who declared the teenager his successor. After making his senior debut in August 2005, Messi became the youngest Argentine to play and score in a FIFA World Cup during the 2006 edition, and reached the final of the 2007 Copa América, where he was named young player of the tournament. As the squad's captain from August 2011, he led Argentina to three consecutive finals: the 2014 World Cup, for which he won the Golden Ball, and the 2015 and 2016 Copas América. After announcing his international retirement in 2016, he reversed his decision and led his country to qualification for the 2018 World Cup.