Someone posted some basic analysis with mild QC on elo vs age for FIDE rated players as of 2014: https://www.chess.com/blog/LionChessLtd/age-vs-elo---your-battl

Someone posted some basic analysis with mild QC on elo vs age for FIDE rated players as of 2014: https://www.chess.com/blog/LionChessLtd/age-vs-elo---your-battle-against-time https://www.chess.com/blog/LionChessLtd/age-vs-elo---your-ba... I think there are a lot of confounders to consider. Though GMs like Anand show a drop in standard rating (https://ratings.fide.com/profile/5000017/chart https://ratings.fide.com/profile/5000017/chart), his blitz rating is near his all-time-high (ie. is his standard rating drop due to decreased mental performance or a shift in interest/focus to blitz?). Similarly, I suspect a lot of strong players who fall in the `2000<FIDE rating<2300` realize they may not be the next magnus and shift focus when/if they make the decision to pursue a career outside of professional chess.