The Portland Trail Blazers are doing it again.

For the second straight season, the Blazers are the most improved team after the All-Star break. Last year, spurred by the acquisition of Jusuf Nurkic at the trade deadline, the Blazers were 7.8 points per 100 possessions better after the break (plus-5.3) than they were before it (minus-2.5).

This year, without a rotation-altering trade, the Blazers have been 9.5 points per 100 possessions better since the break (plus-10.0) than they were before it (plus-0.4). Their 13-game winning streak (which started with their last game before All-Star weekend) came to an end at the hands of James Harden and the Houston Rockets on Tuesday, but prior to that, they were the only undefeated team (12-0) since the break, climbing from seventh place in the West at the break to third place (with a relatively comfortable three-game lead in the loss column over the teams behind them) going into Thursday’s games.

Improvement has come on both ends of the floor. The Blazers have been 5.5 points per 100 possessions better offensively and 4.0 points per 100 possessions better defensively since the break. With the league average seeing an increase of 1.3 per 100, that’s about even improvement on both ends of the floor.

* Blogtable: What makes these Blazers stand out?

On offense, the Blazers have increased their 3-point rate (3PA/FGA) from 31 percent before the All-Star break to 35 percent since, but have seen just a small jump in effective field goal percentage. Improvement has come more from taking better care of the ball and getting to the line more often.

Over the last 16 games, Damian Lillard has averaged 9.2 points at the free throw line, 3.4 more than he averaged prior to that (5.8). Lillard has also seen a drop in turnover ratio, from 9.8 per 100 possessions before the break to 7.8 since. That 7.8 is the second lowest (higher than that of only LaMarcus Aldridge) among 14 players with a usage rate of greater than 30 percent since the break.

On defense, rebounding has been key. After allowing 12.2 second chance points per game before the break, the Blazers have allowed just 9.5 (second fewest in the league) since. They continue to lead the league in opponent field goal percentage in the restricted area and have been at their best defensively with Jusuf Nurkic on the floor.

The defensive improvement may be more impressive, given that six of the Blazers’ 13 post-break games have been against the league’s top-10 offenses, though that includes games against Minnesota without Jimmy Butler and Golden State without Stephen Curry. It should also be noted that nine of the 13 games have been at home. Of course, the Blazers have been better defensively on the road (103.9 points allowed per 100 possessions) than they’ve been at home (104.6) this season.

We’ll see how those numbers (and their post-break improvement) hold up when they play seven of nine on the road after hosting the Boston Celtics on Friday (10 p.m. ET, NBA TV).

Does it mean anything?

Some teams might want to be playing their best going into the playoffs. But playing better late in the season doesn’t necessarily mean anything. In fact, playoff team stats (offensive and defensive efficiency) more strongly correlate with pre-All-Star numbers than with post-All-Star numbers.

Over the last 10 full seasons (going back to 2007-08 and skipping 2011-12), the 20 playoff teams that have seen the biggest increase in NetRtg (point differential per 100 possessions) from before the break to after the break have been more likely to underachieve in the playoffs (losing a series in which they had home-court advantage) than overachieve (winning a series they started on the road).

The playoff team of the last 20 years that saw the biggest improvement was the 2009-10 Phoenix Suns, who were 8.2 points per 100 possessions better after the break (plus-11.2) than they were before it (plus-2.9). They reached the conference finals as the 3 seed in the West, but did so with home-court advantage in each of the first two rounds (because the seventh-seeded Spurs beat the second-seeded Mavs in the first round).

Four of those 20 most improved teams have lost in the first round with home-court advantage, while the 2010-11 Chicago Bulls (4.5 points per 100 possessions better after the break) lost in the conference finals as the No. 1 seed.

The overachievers? The 2008-09 Houston Rockets (5.6 points per 100 possessions better after the break) and 2013-14 Washington Wizards (4.8 better) won first-round series as No. 5 seeds without home-court advantage. And finally, the 2014-15 Cleveland Cavaliers (who were 4.8 points per possessions better after the break) reached The Finals as a No. 2 seed.

With that in mind, here are the teams that have been most improved on either end of the floor since the All-Star break this season.

Most improved offenses

1. Miami Heat

Like the Blazers, the Heat are doing this for the second year in a row. When they went from 11-30 in their first 41 games to 30-11 in their last 41 games last season, it was on offense where they really turned things around.

Last year’s turnaround came with increases in both 3-point percentage and 3-point volume (3PA/FGA). This year, the Heat have shot better from beyond the arc since the break, but they’ve actually taken a lower percentage of their shots from 3-point range than they did prior, so their jump in effective field goal percentage isn’t huge.

They have gone from the bottom 10 to the top 10 in both offensive rebounding percentage and turnover rate. Hassan Whiteside has grabbed 28 offensive boards in just eight post-break games, though he hasn’t seen a big increase in offensive rebounding percentage since the break. The team increase has been more about six different guys grabbing at least 13 offensive boards over the 14 games.

On the turnover front, James Johnson has seen a big drop in his individual rate, from 13.7 turnovers per 100 possessions before the break to just 7.3 since the break. Goran Dragic has also seen seen a reduction. The drop in turnovers, along with more second chances and an increase in pace, as provided the Heat with almost six additional shots per 48 minutes.

The Heat’s post-break offense has been at its best (more than 123 points scored per 100 possessions) with Kelly Olynyk on the floor. Both Olynyk (60.7 percent) and James Johnson (60.6 percent) rank in the top 20 in post-break effective field goal percentage among 157 players who have taken at least 100 shots since the break. Tyler Johnson, meanwhile, has seen an effective field goal percentage jump from 50 percent before the break to 58 percent since the break.

The Heat have played a fairly average post-break schedule in regard to opposing defenses. They’ve picked on some bad ones (scoring 128 points per 100 possessions in three games against the Suns, Nuggets and Knicks) and have played ugly against some good ones (like those of the Sixers and Blazers), but have been strong against the defenses in the middle of the pack.

Going forward, they’ll play just three of their 10 remaining games against top-10 defenses. Two of those are against the eighth-ranked Thunder, and one of those is Friday. Six of their other seven games are against bottom-10 defenses.

2. L.A. Lakers

Rookies and second year players have accounted for 45 percent of the Lakers’ minutes this season. That’s the third highest rate in the league and the highest among teams that aren’t at least 23 games under .500. So, in-season improvement both critical and somewhat expected.

Of course, a vet has been a big part of the Lakers’ offensive improvement. Brook Lopez has seen the second biggest increase in effective field goal percentage (behind that of Wilson Chandler) among players who took at least 300 shots before the break and have taken at least 100 since the break (see table below).

For Lopez, as well as the team as a whole, it’s been about the three ball, both in regard to percentage and volume. Before the break, the Lakers ranked 29th in 3-point percentage and 22nd in the percentage of their shots that were threes. Since the break: fifth and fourth.

Kentavious Caldwell-Pope (46.3 percent) ranks seventh in post-break 3-point percentage among 98 players with at least 50 attempts. But the biggest key to the Lakers’ post-break offense may be a big jump in minutes for Julius Randle. He’s actually seen a drop in usage rate and not much of an increase in efficiency, but Randle has gone from averaging less than 25 minutes before the break to 34 since the break.

As a result, he’s averaged 21.5 points (on 59 percent shooting) over the 13 games. And in that stretch, the Lakers have scored 14.2 more points per 100 possessions with him on the floor (114.1) than they have with him off the floor (99.9).

Most improved defenses

1. Utah Jazz

Utah’s improvement started with the return of Rudy Gobert from a month-long absence in mid-January. Since his return on Jan. 19, the Jazz have allowed just 96.2 points per 100 possessions, 6.5 fewer than any other team. Over those nine weeks, the difference between the Jazz and the second-ranked Spurs (102.7) is more than the difference between the Spurs and the 20th-ranked Hawks (109.1).

More improvement came with the acquisition of Jae Crowder at the trade deadline. And the Jazz have allowed a paltry 85 points per 100 possessions in 308 minutes with Crowder and Gobert on the floor together, with their opponents shooting just 38 percent from the field and 31 percent from 3-point range. And the Jazz haven’t allowed their opponents to do much with all those misses, grabbing 85 percent of available defensive boards (a rate which would lead the league by a wide margin) in those 308 minutes.

There is a schedule-related boost here. Since the break, the Jazz have played seven games against the league’s bottom-10 offenses (including six against the bottom six) and just three games against the top 10. But in two of those three games (Feb. 26 vs. Houston and March 11 at New Orleans), they held their opponent under a point per possession. They’ve now done that in nine straight games and in 18 of their last 24. Given the state of league-wide offense (this is now the most efficient season in league history), that’s pretty remarkable.

The Jazz have four games remaining against top-10 offenses, including two against the Warriors. One of those is Sunday at Golden State (8:30 p.m. ET, NBA TV).

2. Indiana Pacers

The Pacers have improved defensively six of their 14 post-break games having been against teams that rank in the top 11 offensively (the 11th-ranked Wizards have bounced in and out of the top 10). They’ve gone 3-3, but held those top-11 offenses – Milwaukee (x 2), New Orleans, Washington (x 2) and Toronto – to just 103.4 points per 100 possessions (about four fewer than the league’s post-break average) over the six games.

The Pacers’ post-break defense has been at its best, allowing just 96 points per 100 possessions, with Myles Turner on the floor. Turner has been improved offensively since the break (seeing a sizeable jump in effective field goal percentage and true shooting percentage), but his defense has been more important.

While Turner has made an impact inside, forcing turnovers has been a big part of the Pacers’ defensive improvement. They lead the league in opponent turnover rate since the All-Star break, having forced 17.4 per 100 possessions, up from 15.1 (10th) before the break. Victor has been the league leader in steals this season at 2.2 per game, and has seen an increase (from 2.1 to 2.8) since the break, with Thaddeus Young (2.3) joining him in the top four in post-break steals per contest.

The Pacers have also rebounded a little better, grabbing 77 percent of available defensive boards (15th in the league) since the break, up from 76 percent (27th) before it.

Things haven’t gone so well on the other end of the floor. The Pacers have seen the league’s biggest drop in offensive efficiency since the break. They ranked sixth offensively (108.5 points scored per 100 possessions) before the break and rank 26th (101.6) since the break. Oladipo (from 59 percent to 46 percent) and Young (from 54 percent to 45 percent) have seen two of the eight biggest drops in effective field goal percentage since the break among 142 players who took at least 300 shots before the break and have taken at least 100 shots since the break.

The improved defense will continue to be tested in the next couple of weeks. The Pacers will play six of their next eight games against top-10 offenses. That includes two games against the second-ranked Warriors and two more against the seventh-ranked Clippers. L.A. is in Indiana on Friday.

Most improved shooters

Here’s a look at the players who have seen the biggest increases in effective field goal percentage since the All-Star break.

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John Schuhmann is a staff writer for NBA.com. You can e-mail him here, find his archive here and follow him on Twitter.

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