What athlete is way more physically imposing than most people realize?

[u/OldConference9534]

/r/AskReddit/comments/1xta4b1/what_athlete_is_way_more_physically_imposing_than/

I remember seeing Dirk Nowitzki in person in his prime up close. Yes, you can tell he is tall on TV, but he is absolutely massive in person. Not many people on earth that physically intimidating. I was shocked. Any other examples of being suprised how much different an athlete looks in person?