So how did Miami Heat coach Erik Spoelstra feel at Friday’s practice after a convincing Thursday night home victory over the surging Boston Celtics in front of a national TV audience on TNT?

Well, not quite what one would imagine.

Spoelstra was asked about the state of the team — the next game for the 20-20 Heat will mark the midway point of the 82-game regular season — and he was visibly displeased.

“I’m not happy about where we are,” Spoelstra said. “We’re not happy about where we are. Yesterday was yesterday. It was a great competitive game on a Thursday night. [Saturday] night is the game I want to see a difference in our approach.

“When we set out on the very first day of training camp, this is not where we wanted to be. [Saturday] is an opportunity to start to change that for the second half of the season. We have a lot of season left and a lot of opportunity ahead of us.”

Star guard Dwyane Wade, who has had Spoelstra at his side for about 14 of his now 15 and a half seasons in the NBA – either as an assistant or head coach – understood where his coach was coming from as the Heat prepare to host the Memphis Grizzlies on Saturday evening.

“No one wants to sit at .500. No one wants to be under .500, so we want to continue to keep playing better as a team,” Wade said. “I think we’re a better team than 20-20, but we’re 20-20.

“If we were 25-15, we would want to be 30-10. The want for us to be better is never going to go away. We had a team that [went to the Finals] four years in a row, you didn’t see Spo smiling all the time, even then.”

Being .500 is too familiar of a feeling after the 2016-17 run of 11-30 to 30-11 resulted in 41-41 and finishing a tiebreaker outside of the Eastern Conference playoff picture. The Heat were then 44-38 last season – good for sixth in the East and a first-round exit in five games to the Philadelphia 76ers.

“It's about where we've been in this whole three seasons we've kind of been together, so it's probably a little bit frustrating for everybody,” guard Tyler Johnson said.

Beating the Celtics soundly is a glimpse of what the Heat’s potential is, but one thing that must change is how they play against sub-.500 teams. Miami is 9-9 against teams with a losing record at the time of their matchup. Within the Southeast division, made up solely of opponents below .500, the Heat are 3-8 with three losses to the 12-29 Atlanta Hawks.

“This team is really talented and we get up for those games, for the Bostons, Milwaukees, Torontos, Denvers. It's the below .500 teams we struggle with,” Johnson said. “They're still in the NBA, regardless of what their record is. They're still NBA players. They are still guys that make money to play basketball, so you have to show them the same respect you show other people.”

Rozier’s request

A player that sends Wade a request for a jersey exchange with ample time during this Wade’s final season, may have his wish granted.

That’s how Wade’s Thursday night swap with Celtics point guard Terry Rozier developed. Rozier put in his request in late November.

“I got a text at 4 in the morning from Terry Rozier. He’s like, ‘Yo, I’m going to need that jersey,’” Wade said. “So I go and I look at when we’re playing them, thinking we’re about to play Boston. I’m like, ‘We don’t play y’all till January.’ So he put his request in early and let me know at 4 in the morning to make sure that when we play them he needed that jersey. We have that kind of relationship.”

Although Rozier is only in his fourth year in the league, their connection dates back further.

“I’ve been knowing Terry for a while – when he was at Louisville and we had a sit down and talk,” Wade said. “He told me how much of a big fan he was. He had all my sneakers – Converse, everything. He showed me he’s been a big fan for a long time, and we’ve built a relationship from there, even when he was in college. Just me reaching out to him, seeing how he was doing.”

dfurones@sunsentinel.com / On Twitter @DavidFurones_