If the first preseason game of the 2019-20 Boston Celtics season was any indicator of future fan performance, this is going to be one wild year at the Garden.

Tacko-mania ran wild, but there were a few things that happened on this night that were worth noting. Here are 10 of them.

1. There's something about Jayson Tatum this year

I can't put my finger on it, but there's something about Tatum.

Confidence? Maturity?

I don't know, but I feel like he's carrying himself differently. He certainly shot differently in his first appearance this season. As noted by Tom Westerholm in the game report, only two of Tatum's 14 shots came in the midrange.

"I think he did a really good job," Brad Stevens said. "I thought he attacked when it was appropriate to attack. I thought he shot the 3 without hesitance, which is really important. He is--the 3 will open up his drives, open up his opportunity at the rim, and opens up his opportunity to go to the foul line. That's the one thing we told him today when we met. You've got to throw all the narratives out about getting to the foul line and shooting 3s and just make the right play, because if you do that, everything else takes care of itself. When you're open, shoot it. When you're not, drive it."

2. The defense is bad

This... this shouldn't happen.

"You can go through every defensive box that you can make," Brad Stevens began after the game, "transition defense, rebounding, pick-and-roll defense, down screens, go through them all, and we have to improve on all of them. That was clear tonight, and it's been clear before tonight."

It's super early, so things like this are going to happen. No team is going to come out and be perfect.

However, they need to be much better than this. We'll be taking a closer look at where these breakdowns happened and ways they might be fixed later on today.

3. Grant Williams excels at the little things

Individual plus/minus is relatively meaningless in these kinds of games, but it's always fun to check Williams' numbers because they always seem to pop. In this one, he was a team-best +14, which is a big number in a one point game.

He led the team in rebounds with nine in 18 minutes of play. He had a stretch where he was essentially the team's center in a super-small lineup. He helped out and made plays like this:

That's not to say he didn't make mistakes or doesn't need work. He missed all of his 3's. He certainly missed some rotations defensively. He also found his way in the middle of a lot of positive plays, which is something you find when a smart player hustles.

4. Carsen Edwards is not shy

Edwards is not in Boston because he's a shrinking violet.

"He's been making shots forever," Stevens said after the game. "He just has to continue to take the right ones."

He was 3-for-6 from 3. There was one that he airballed out of sheer excitement, it seemed, but most of the other shots he took were perfectly in rhythm.

Stevens also touted Edwards' defense, which wasn't bad. He's a tough kid who is not afraid on either end of the floor.

If you thought, though, that he was maybe going to come in and try to ingratiate himself with his vets by passing up shots, then you were very, very wrong.

Shooters shoot, and Edwards is Wild Bill Hickok. If he's in the game, he knows he's there to do one thing. He did that in his debut, and he did it pretty well.

5. Gordon Hayward seems fearless

Six of Hayward's 10 shots came at the rim, and they weren't easy.

141 of Hayward's 635 field goal attempts last season, more than 22 percent of his shots, were in the 10-19 foot range. He took zero in that range in this game.

Unlike Tatum, whose shot selection seemed to be a matter of preference, Hayward's midrange game last year felt more like that of a guy who didn't want to get all the way to the rim. Hayward is always going to take some midrange shots, but last season he took more than usual.

Hayward attacking the rim was a nice thing to see, and weirdly so was him hitting the floor at times because it meant he was willing to risk the fall.

"Still gotta get my legs underneath me," he said after the game. "I would have normally dunked the one of the fast break but I was way too tired. I'm going to have to improve that. It was certainly good to get out there and make some explosive moves to the basket."

6. Robert Williams needs work

I'll give him a pass on this first game because Stevens said Williams was too amped up and he got tired.

I get that. He also loves to jump, and he was doing a lot of that.

I'm still not convinced that he should spend a lot of time with the Celtics this year. I still, at this point, believe he needs G League time to build better habits.

He still got caught out of position. He still hunted blocked shots and pulled himself out of position in order to try for them. He still didn't bend his knees or get wide often enough to deter drives.

Williams has a full preseason to prove he can do these things, otherwise he's has to be off to Maine for a little while.

7. OK Let's talk Tacko

Tacko-mania was out of control on Sunday night. People love him, and for good reason.

I hate to be the bad guy here, but it's also important to note that Fall needs a lot of work.

He's a giant dude and he'll do some OK things just because of that. He'll also never be able to do certain things because of that.

For example, he'll never really be able to put the ball on the floor effectively because he's too big to dribble. He's big and strong, but his center of balance is high, so other strong people can push him a little further away from the basket than he'd like. Once he's there, he has to give the ball up because any dribbling will draw a double team.

Charlotte got him to turn the ball over twice because of that.

There's nothing that can be done about the chants. People are enthralled by the seven-and-a-half-footer.

He just needs time to figure things out. That's all I want people to know. It's fine to chant and it's all in good fun.

But also, give him the time and space to figure things out.

8. So now Terry Rozier is driving and kicking??

Terry Rozier passed up open 3's to drive and kick in this game. He never passed up open 3's in Boston. He barely passed up contested ones. Yet, here he was... passing.

"That's been our big emphasis," he said. " It's our first game playing against somebody else. Guys are out there playing a little fast, but I think it'll all slow down for us. We're still trying to figure one another out. So just going out there, listening to what the emphasis is, which is moving the ball, just making things happen and it was good for us tonight."

9. Let's give Jaylen Brown some love

He played only 15 minutes, but I wanted to highlight a couple of plays.

One was a drive early in the game which ended with a crafty finish at the rim. The other was a drive that ended up feeding Brad Wanamaker for a layup and a foul.

Brown hasn't been crafty and he hasn't been a passer. If he can fold those things into his game, then suddenly the contract extension conversation get a little more difficult.

10. Kemba was quiet

12 points and 4 assists in 20 minutes of play.

Nothing overly special. He had some impressive dribble moves. He had a nice pull-up 3. He also had some defensive lapses that Brad Stevens said he expected and hopes they'll work through.

"I was in awe kind of the whole game actually," Walker said of his first game experience as a Celtic. "Just excited about the fans, about the future games, about the actual regular season. It was intense for a preseason game, the first one. A lot of people showed up. So that was pretty exciting."