Most players decline. The elite ones find ways to adapt. Ronaldo reinvented himself as a penalty-box predator when his pace went.
Messi has not adapted to decline. He has adapted so he can dominate and stay ahead of a game that has always been chasing him.
At this World Cup, he has been creating more but moving less. He has had 33 shots and created 21 chances, the most combined (54) since Diego Maradona in 1986.
He has managed this despite walking 47% of the distance he's covered, the highest percentage of any outfield player.
Messi has averaged the shortest distance of all Argentina outfield players to have featured for 20-plus minutes at the tournament - covering just 8.2km per 90 minutes.
The stats do not stop there. He is averaging just 2.7 sprints per match, compared to 5.3 just four years ago.