You are talking about age....I don't think anyone will argue that he's not 20
There are
16 year old season - Byfield 1st year
17 year old season- Lafreniere/Byram 2nd year
18 year old season- Hayton/Boqvist 3rd year
19 year old seaons - Glass/Leason 4th year
20 year old season - Blichfeld/Langan 5th year
21 year old season - aged out
In the CHL, these are the seasons. There
IS NO 21 YEAR OLD SEASON. A 20 year old is an overager, in his 20 year old season.
There is a reason that people don't say "Lafreniere did great in his 15 year old season"