know projecting future performance levels is not an exact science, in fact it is far from one. That being said, age progression and regression charts are usually a pretty accurate, although individual players have ups and downs on either side of the prime year peak on the chart. 2017 saw a lot of down years with players on the upside of prime. 2018 may have seen some players exceeding what was expected, but when players are on the upside, it's hard to know how much better they can still be, or if their biggest year came before the normal prime peak year.
It's pretty much agreed that most players start declining at age 30, and just about everyone declines by age 33. Here's a good article...
https://www.baseballprospectus.com/news/article/9933/how-do-baseball-players-age-investigating-the-age-27-theory/
Note: the article shows how differing skills peak at different ages.
Let's say 29 is prime. Some think 27-28 is prime, but I'm going with 29.
Here's a look at our key players and their position on the age curve chart.
My list is in order of how I view their importance to our team in 2019:
Red= Post Prime
Blue= Barely Post Prime
26 Betts
31 JDM
29 Sale
26 Bogey
33 Price
24 Beni
30 Porcello
28 JBJ
28 Eovaldi
25 ERod
22 Devers
28 Vazquez
28 Barnes
31 Brasier
33 Moreland
35 Pearce
31 Nunez
29 Leon
29 Hembree
30 B Holt
34 Wright
28 Johnson
30 Thornburg
30 Workman
30 Velazquez
35 Pedey
26 Swihart
As you can see, 10 of our top 13 players are approaching or in prime, and only 1 (Price) is significantly past prime. Even Price is just 33, and he's not 36-42 like some key starters on other teams.
Our oldest players are all under 36.
33 Price
33 Moreland
35 Pearce
34 Wright
35 Pedey