Messi and Barcelona had a memorable campaign when they won a continental treble after capturing La Liga, Champions League and Copa del Rey titles. Not only did he finish as the top scorer in UCL, but he was also named La Liga Player of the Year. This all came during Pep Guardiola's first season as manager, when Messi had 38 goals and 19 assists for the Blaugrana.
It's not every year a player leads the league in goals, but Messi made that a regular occurrence throughout his Barca tenure. During this season, Messi scored 50 goals in all competitions, while finishing with 73 goal contributions.
It proved to be a special season for the Argentine after winning his 10th La Liga title in a year he was also named Barcelona captain.
It doesn't get any bigger than the Ballon d'Or as an individual achievement, and 2009 marked the first time Messi captured the trophy. Since then Messi's gone on to win six more Ballon d'Or awards, which is more than any other player in the history of the competition. The amazing thing about it is Messi was only 22-years-old at the time, which further encapsulated how promising a talent he was and went on to be.
Messi had 59 goal contributions in 53 games after leading La Liga and Champions League in goals that season.
The 2015 season proved to be another year where Messi and Co. captured a treble and the Argentina star contributed massively. Messi ended up with 89 goal contributions, as Barca went on to win La Liga, Champions League and Copa del Rey once again.
That season also included Messi's passing of Telmo Zarra's La Liga goals record. By the time Messi left the club, he finished with 474 goals in Spain's top flight.