LeBron on his legendary pickup game with Michael Jordan (and Penny Hardaway, Ron Artest, etc) at 16-years-old: "When I was finally able to get on the court… I was unguardable… I was busting a**… I was nervous, but I was like, ‘I’m about to go crazy,’ and I did."

Metta World Peace has talked about it a couple of times as well

Clip 1 where he says "[LeBron] was cooking [...] posting, getting to the basket, and I'm like, this is going to be a huge issue. When I saw that, it actually motivated me. 'I gotta go to work.' He coming into the league. [...] He could've went pro right there, honestly."

(Artest was also quite young; just 20 at the time so makes sense why he'd be motivated)

Clip 2, he backs up LeBron's claim: "He was cooking, nobody could guard him. I'm like, I'm getting mad, he's embarrassing us. He’s coming in at full speed, LeBron James — boom; I lay him on the floor. He get up and start cooking more; he’s just tough. He was about 225 (pounds) at that time, but I remember him just being tough."

LeBron also once talked about going to Jordan's Santa Barbara Camp as a rookie; said that him and MJ were on the same team and just dominated some college kids.

That's Michael Jordan's camp in Santa Barbara. We were definitely on the same team then. I was a rookie in the league and I went to Santa Barbara to MJ's camp. We used to play around 9. The camp would end, he would let the kids watch the first game around 8:30 and then he'd ask the kids to leave.

We would stay along with the college kids that he'd invite to the camp and we would get a good ass run in for about an hour, hour 15. I was on a team with MJ and we didn't lose a game.

Seems like shitty team balancing tbh