Height remains an advantage in basketball, but lineups are now selected for how they distribute defenders across the floor. Spacing has become the organising principle.
Defence is a resource allocation problem
Five defenders must cover five attackers and also protect the basket. Any defender who can safely leave his assignment becomes a free helper near the rim.
A player who poses no threat from distance donates his defender to that role, which means an offence effectively attacks with four players against five.
Spacing removes those free helpers by forcing every defender to stay attached, which is worth more than the individual shots the spacing player takes.
Driving lanes are created by geometry
A ball handler attacking the basket meets whatever help arrives from the weak side. The distance that help must travel determines whether it arrives in time.
Positioning shooters further from the basket lengthens those distances, so the same drive that would have met a second defender now reaches the rim unopposed.
This is why offences position players in the corners. The corner is the furthest point a defender can be pulled while remaining an immediate scoring threat.
Screening changed what big players do
A tall player setting a screen and then moving away from the basket drags a rim protector out of position, which is often more valuable than posting up.
The alternative is rolling to the basket, which pulls help toward the rim and opens the perimeter. Both outcomes create an advantage somewhere on the floor.
Defences must choose which to concede, and that choice is made in a fraction of a second by two defenders who must agree without speaking.
Rebounding lost some of its priority
Height still wins rebounds, but a team that commits multiple players to the offensive glass surrenders position for the opponent's transition attack.
Because transition possessions are the most efficient in the sport, conceding them is expensive, and many teams now retreat rather than contest second chances.
The calculation favours the team that shoots more efficiently, so a spacing-heavy offence can accept fewer rebounds and still gain on the exchange.
Switching defences chase the same logic
If every defender can guard every attacker, screens stop generating advantages and the offence must create separation another way.
That requires defenders of similar size and mobility, which pushes rosters toward players in a narrower physical band rather than toward extremes.
The very tall player survives where he can both protect the rim and move on the perimeter, and those two demands now define the position rather than height alone.
