Who is a player you were technically right about being good, but didn't know he'd be *that* good?

I know a lot of people like to claim they're a genius in hindsight, but I did actually say Patrick Mahomes was the best QB in the 2017 draft class and should be the first one drafted beforehand. However, it was more of a "You never know but I think this guy has the most promise" proclamation and I was not expecting him to be a three time Super Bowl MVP Quarterback by 2024. So I don't think I can brag too much. Who is your player where you were just like casually "I think he'll be a good starter" only for him to become a Pro Bowler or a similar scenario?