#1 Scoring 73 goals in a single season at a top 6 European league
During the 2011/12 campaign, Messi set new footballing standards with a record-breaking season that saw him score 73 goals in all competitions.
This record-breaking haul is definitely one of Messi's best achievements as in this season the Argentinian maestro illustrated his ability to perform and score in all competitions hitting a record 50 goals in La Liga and a then-record 14 goals in the Champions League.
Whilst Messi has demonstrated his capability of consistently scoring 50 goals in a season this record of 73 is truly amazing even by his standards and when considering that most strikers score half of that total in a season it amplifies what an amazing achievement this is.
Given the high bar Messi has set with this record, it's hard to foresee it being broken anytime soon.