Conversation so far:
What was a goal Lionel Messi broke this year?
on 20 March, Messi became the top goalscorer in Barcelona's history at 24 years old.
who did he play for?
Barcelona.
how many goals did he score to break the record?
overtaking the 57-year record of Cesar Rodriguez's 232 goals with a hat-trick against Granada.

Question: how old was he when he broke the record?
Self-contained rewrite: how old was  Lionel Messi when he broke the top goalscorer record?