The Eastern Conference Finals has now been booked. It will feature the Boston Celtics and the Cleveland Cavaliers — a rematch of last year's battle in the East.

Both teams look different now, though. The Cavs have a mixed bag of new acquisitions. The Celtics, meanwhile, now have Kyrie Irving — although he's not playing. They also have a rookie named Jayson Tatum who has a bit of a history with LeBron James himself.

Six years ago, while Tatum asked James to follow him back on Twitter. He also posted a photo of the current Cavs star, who was then playing for the Miami Heat, with himself. Below is the actual tweet:

Per Jay King of MassLive:

“I was like in fourth grade when I took that photo,” Tatum said. “And I was like nine or 10. I remember after the game, I took a picture of him. And then I guess five years ago I tweeted it trying to get a follow back.”

When they first met, Tatum didn't bring up his tweet, but casually said ‘what's up':

“I said what's up,” Tatum said. “But I didn't mention anything – I forgot about the picture and the tweet.”

Now, he's 20-years-old, a grown man about to face his idol. He will most likely match up against James. And when asked about how he intends to stop him, Tatum said, per Scott Polacek of Bleacher Report:

“It's my first year, so I don't know. … I don't have the answer.”