NBA teams are reengineering the game around rebounding like never before. The spark came from a call to New Zealand that set things in motion.
The Nigerian men’s basketball team wasn’t a powerhouse. To gain every possible edge, head coach Mike Brown stepped outside his comfort zone and looked halfway across the globe for ideas.
A colleague with the Golden State Warriors, where Brown once coached, connected him with Paul Henare, who led New Zealand’s national team from 2015 to 2019. If Nigeria wasn’t a juggernaut, New Zealand basketball looked like it had been built from cardboard boxes—no thriving pipeline of NBA stars. So New Zealand had to improvise. And in one notable way, their approach signaled a shift in the sport.
Brown wanted to understand how an offensive-rebounding strategy—counter to traditional basketball wisdom—had become so effective. Henare’s teams were aggressive on the glass, sending all five players to the paint when a shot went up. For years, NBA teams avoided heavy crash-prone offensive rebounding because they believed chasing the ball would derail transition defense. The logic was straightforward: players racing for offensive boards would be out of position for quick transitions, giving opponents faster ball movement and more easy baskets.
By the 2010s, the prevailing call was: risk offensive boards or prioritize transition defense. Most organizations chose the latter.
That’s why Henare stood out.
Not only did his squads dominate the offensive glass, but they also prevented easy scores on the other end. So, ahead of the Tokyo Olympics in 2021, Brown scheduled a video call with Henare to learn about a tactic called “tagging up,” where everyone crashes the boards, though with discipline and purpose. Henare explained that there are fundamentals behind tagging up.
When players crash, they aren’t indiscriminate; they attack specific areas of the floor, meeting defenders from behind, pinning them in place, and blocking pathways to leak out in transition or to retrieve longer rebounds—an adaptation driven by the rise of the three-pointer.
The effect isn’t simply more chaos. The more crashers there are, the more defenders must stay back to box out. A recent Cavaliers–Warriors game illustrated this concept in action:
Henare demonstrated clips of optimal tagging-up execution. Brown asked questions. Henare answered.
“I remember Coach Brown being genuinely intrigued,” Henare recalled. “It wasn’t a casual inquiry. He was seriously engaged.”
Brown wasn’t alone in his curiosity.
After a lengthy video conversation, Brown began applying these ideas with the Nigerian team, though they didn’t go all-in on five-man crashes. He continued teaching tagging-inspired rebounding after moving to the Sacramento Kings, and now, with the New York Knicks, he has sharpened his focus on offensive rebounding.
Gaining control of the boards is the first step in winning the possession game. And never before have NBA coaches obsessed over this aspect as they do today.
Take Brown’s Knicks as an example: they’re among the league’s top rebounding teams on both ends, able to convert misses into extra scoring opportunities. Second Spectrum reports they create 4.6 more scoring chances per game than opponents, the highest such differential in the NBA. No other team exceeds four, and this edge translates into about 5.6 additional points per game—potentially the difference between a win and a loss.
Because of numbers like these—often factoring in turnovers—offensive rebounding is booming across the league.
In 2020–21, only one team grabbed more than 30 percent of its own misses on the offensive glass. The next season saw five teams reach that mark. As of recent weeks, twenty teams were doing so, with a couple more just below.
The NBA’s stance on offensive rebounding has flipped seemingly overnight. Teams are even using G League affiliates as testbeds. For instance, the Knicks’ affiliate has sent four players to the offensive glass this season. It’s not just about crashing with gusto; it’s about doing it with a strategy.
To Henare—and to coaches who propagated these ideas, including NBA mentors like Memphis Grizzlies’ Tuomas Iisalo, Boston Celtics’ Joe Mazzulla, Houston Rockets’ Ime Udoka, Phoenix Suns’ Jordan Ott, Cleveland Cavaliers’ Kenny Atkinson, Toronto Raptors’ Darko Rajaković, and others—this isn’t chaos. It’s a science.
Mike Brown’s Knicks have championed aggressive crashing. The Celtics, with a leaner roster due to injuries and rotations, have nonetheless embraced offensive rebounding as a core component of their success.
Boston’s approach defies traditional shooting-light, high-scoring narratives. They still score at an elite rate (roughly 122 points per 100 possessions) by leveraging volume from three-pointers, minimizing turnovers, and pursuing relentless offensive rebounding despite lacking classic rim-prorollers. They rank among the league’s leaders in offensive rebound rate, a testament to their evolved philosophy.
Coach Mazzulla has long treated offensive rebounds as a controlled experiment. In summer 2021, while an assistant under Udoka, Boston tested crashing three players per shot attempt in the G League—rejected at first, but later embraced more aggressively when Mazzulla became interim head coach. Maine Celtics, under head coach Alex Barlow, pushed the concept further, initially hesitant, then convinced by analytics support.
Barlow recalled, “Our philosophy was: let’s send everyone and see if the net positive holds.” The result was decisive: the team won the rebounding war again and again, maintaining solid transition defense while capitalizing on extra opportunities. Now, Merg leads coaching analytics for the Celtics, refining their glass-crashing approach.
The Celtics’ current formula includes at least three crashers on 19.1 percent of their shots, ranking third in the league for three-player crash rate and sixth for net chances created, underscoring a balanced attack.
Tagging up isn’t a blanket rule to flood the paint with five players on every possession. Rather, teams selectively crash on three-point attempts, where the longer rebound creates more chances for guards to chase down a board. This nuance helps prevent easy transition baskets while still maximizing second-chance opportunities.
Veteran centers like Steven Adams—though he’s from New Zealand and not a member of the Tall Blacks—have personal experience with the traditional rebounding battles and understand the shifts in the game’s approach.
The Rockets, led by Ime Udoka’s philosophy, exemplify an even more extreme version. With notable size and players like 6-foot-7 Amen Thompson, Houston emphasizes crashing three or more on a significant portion of their possessions. Udoka has shared eye-opening data with veterans like Kevin Durant, who long relied on instinct rather than crash dynamics. When the Rockets commit to three crashers, they win the offensive rebound 56.3 percent of the time in those scenarios, a staggering edge that supports their strategy of turning misses into high-percentage scoring chances.
Houston’s ascent isn’t about shouting down traditional wisdom; it’s about using rebounds to fuel better looks and more opportunities. Their most effective offense often arises from missed shots, a radical departure from conventional thinking but one supported by analytics and on-court results.
Across the league, the rebound-first philosophy is spreading. Teams deploying three or more crashers have doubled their usage in just three years, and many squads are experiencing the benefits. Sixteen teams routinely secure more than half of their misses when crashing with three or more players, and twenty-nine teams grab at least 40 percent under the same condition. The lone outlier: the Washington Wizards, hovering at 38 percent.
Even programs with more restrained crash habits, like the Milwaukee Bucks, show that when they do crash three or more, they dominate the boards—with a 58.4 percent offensive-rebound rate, the league’s best—but their overall impact is limited by how rarely they commit to that approach.
If done with the tagging-up discipline, this style does not undermine transition defense. In fact, it’s a calculated risk that many coaches now accept as part of maximizing possessions and scoring opportunities.
Iisalo, who long led teams in Germany and France before joining the NBA, has helped integrate these concepts into teams like the Grizzlies. They crash at least three players on 18.8 percent of their possessions, the fourth-highest rate in the league, while maintaining solid transition defense. The broader trend is evident: teams that crash frequently and pin defenders creatively tend to outperform on offense.
The Suns excel in three-player crash rates and maintain a strong transition profile after defensive rebounds. The Trail Blazers sit near the middle of the pack in both measures, while the Raptors and Celtics show similar patterns in their own ways.
Bottom line: the pursuit of more scoring opportunities through offensive rebounding is reshaping how teams think about possession and efficiency. As Mazzulla put it, the question is no longer whether to crash, but how to crash in ways that maximize shot opportunities and possession counts—and whether this approach can redefine what it takes to win in the modern NBA.
Would you embrace aggressive offensive rebounding as the future of winning basketball, or do you worry about potential risks to transition defense? Share your thoughts in the comments.
