He played a full season before being drafted...???
I assume your comment is meant to be sarcastic, implying he didnt playing in the NHL before he was drafted. Maybe I'm misinterpreting you, and if so my bad.
If you're not being sarcastic, are you talking about his last season in junior. If so, isn't the OHL season 68 games? He played 62 games and 42 games in his two years of OHL hockey. I remember him having injury issues dating back to even before that.
The kid was always look upon highly, however there were injury concerns going back to those days. I remember having this discussion with people pre-draft, as many thought he was a top 5 talent, but his injury history concerned many teams. Just the fact that he went 16 should show that. Here are a few articles if you are not aware, and I found this after just a quick google search.
Man-boy Chychrun may not go No. 1 in OHL - TheHockeyNews
Here is a quote and link out of SBnation where it talks about him being a high end talent.
Jakob Chychrun sidelined ‘indefinitely’ after suffering knee injury
Chychrun was drafted at 16th overall by the Coyotes in the 2016 NHL entry draft and was a considered a steal by many as the defenseman was projected to be a top-three talent. He jumped right into the NHL after being drafted but sat a few games in the press box last season despite a high-offensive upside.
His knock was always injuries, and that was the discussion I was having at the time elsewhere. Maybe you were not, and you were more concerned with his play. That's cool as well.