JacksonColt
Rookie
Go to the link which @Zhilady referred to. You'll see a breakdown for every decade. Trend seems to go on until 10s.
It shows there were more finalists in 2010s decade after the age of 27 than 26 and younger which confirms what I have been saying. This era is different from other eras and players are playing longer and at a great level in advanced age. To say someone has severely physically declined at 26 just doesn't add up.