Only once In my life I asked, and that was only because my cousin wanted it, but was too scared to ask.
Their use to be a big HS. Showcase in my city every year called the Prime-time shootout ( I’ve met a bunch of dudes there while they were still in HS. Rondo, Bassy, Dwight Howard, Josh Smith)
1st year I went Bron was in the 11th grade, I had heard all the hype about him, so I had to see it for myself. His team was playing Oak Hill, who had Melo. At the time I had never even Heard of Melo.
Arena started filling up right before their game started. Next thing I know I see this tall ass dude asking to get by. It was Mike Miller.

I have no idea why my cousin was shook to ask for his autograph. Dude was super cool when I asked.