UCLA 切入UCLA Cut

这个动作以约翰·伍登（John Wooden）执教的 UCLA 球队命名。伍登 1948 至 1975 年执掌 UCLA，在 1964 到 1975 的十二个赛季里拿下十座 NCAA 冠军。那些球队跑的进攻体系通常被称作 UCLA 高位策应进攻（UCLA high post offense），而这套体系的第一个动作，就是控卫把球传给侧翼，随即借站在肘区队友的背掩护直切篮筐。其他球队把这一下学走之后需要给它起个名字，用的就是学校的名字。 · The action is named after the UCLA teams John Wooden coached. Wooden ran the program from 1948 to 1975 and won ten NCAA championships in the twelve seasons between 1964 and 1975. The offense those teams played is usually called the UCLA high post offense, and its opening action was exactly this: the guard entered the ball to the wing and immediately cut to the rim off a back screen from the player standing at the elbow. Opponents who copied the action needed a name for it, and they used the school's.

让它成为标志性动作的并不是这一次切入本身，而是伍登从来没有把它当成一次性战术。切入只是一连串阅读里的第一个：切开了就直接上篮，切不开进攻就自然流向下一个选择，球转移到另一侧继续跑。今天沿用这个动作的球队都保留了这个性质。几乎没有人跑 UCLA 切入是奔着那记上篮去的，跑它是因为防守必须尊重那记上篮。 · What made it a signature was not the cut itself but the fact that Wooden never treated it as a set play. The cut was the first read in a sequence: if the guard came open the layup was there, and if not, the offense simply flowed into the next option and the ball reversed to the other side. Teams that lift the action today keep that property. Almost nobody runs a UCLA cut expecting the layup. They run it because the defense is obliged to respect the layup.

六十年过去，它是极少数穿越了每一个篮球时代的动作。在 NBA 的战术板上，它是一个有名字的启动方式：喊出 “UCLA” 通常就是指控卫传侧翼、借肘区掩护切入，之后接哪一套再另说。在青少年训练里，它往往是无球掩护的第一课。两边的理由其实是同一个：它只有一个动作、四秒钟跑完，而且它逼着球员养成传球之后立刻切的习惯，而大多数回合恰恰丢在没有这个习惯上。 · Sixty years on, it is one of the few actions that survived every era of the game. It sits in NBA playbooks as a named entry, where calling "UCLA" usually means the guard passes to the wing and cuts off the elbow before the possession continues into something else. It sits in youth programs as a first lesson in screening away from the ball. The reason is the same in both places: it is one action, it takes four seconds, and it forces a player to cut hard after passing, which is the habit most possessions are lost to.

本页的 5v5 变形写的是 1-4 High UCLA，这个阵型承担的工作比名字看上去多。四名球员站在罚球线延长线上：两人在肘区，两人在稍高于突破点的侧翼；第五人在弧顶持球。罚球线以下一个人也没有，这正是全部要点，因为回合一开始禁区就是空的。 · The 5v5 variant on this page is labeled 1-4 High UCLA, and the alignment does more work than the name suggests. Four players stand level with the free-throw line extended: two at the elbows, two on the wings just above the break. The fifth has the ball at the top of the key. Nobody is below the free-throw line, which is the entire point, because the possession starts with an empty paint.

禁区空着，切入才可能无人干扰地到达。在常规的双卫站位加低位内线的阵型里，控卫切向篮筐会一头撞进负责盯防那名内线的防守者身上，那个人本来就站在禁区里承担补防。而从 1-4 High 出发，那里根本没有人站着。任何想保护篮筐的防守者，都得先放掉一个站在肘区或侧翼的射手，而且要在切入者已经启动之后才开始跑那段距离。 · That emptiness is what lets the cut arrive uncontested. In a conventional two-guard front with a post player on the block, a guard cutting to the rim runs straight into the defender assigned to that post player, who is already standing in the lane with help responsibility. Out of 1-4 high there is no help standing there. Any defender who wants to protect the rim has to leave a shooter at the elbow or the wing to do it, and has to cover that ground after the cutter is already moving.

阵型同时决定了掩护的角度。肘区队员位于切入者的上方、略偏内侧，因此背掩护正好设在控卫防守人的上侧肩，也就是盲区一侧，因为那名防守者刚刚转头去跟传向侧翼的球。掩护人只要站得再低一点，切入者就得绕过掩护而不是贴着掩护走，这一步之差通常就是上篮和被封盖的差别。 · The alignment also sets the angle of the screen. The elbow player starts above the cutter and slightly inside, so the back screen lands on the top shoulder of the defender guarding the ball handler, on the blind side, since that defender has just turned to follow the pass to the wing. A screener standing any lower forces the cutter to run around the screen instead of off it, and that single step is usually the difference between a layup and a contest.

镜像的 1-4 Low 把同样四个人摆在底线一带，产生的是另一组动作：Flex 掩护、横掩护，而且跑不出 UCLA 切入，因为球的上方没有人可以做掩护。 · The mirror image, 1-4 low, puts the same four players along the baseline. It produces a different family of actions, flex screens and cross screens, and no UCLA cut at all, because there is nobody above the ball to screen with.

盯人防守丢掉切入者，是因为防守者转头去看球。区域联防则从一开始就没有跟着人：守的是区域、面向的是球，于是当切入发生时，区域顶端的两名防守者正看着侧翼，而切入正好发生在这两人身后。 · Man-to-man defenders lose the cutter because they turn to watch the pass. Zone defenders never had the cutter to begin with: they are guarding an area and facing the ball, so while the cut is happening the top of the zone is looking at the wing and the cutter is behind it.

面对 2-3 联防，切入正好穿过顶端两名防守者之间的缝隙，在底线三人向球侧移动的过程中抵达罚球线一带。面对 1-3-1 更直接，因为顶端那名防守者已经压向球侧，切入走的就是刚刚让出来的那条通道。 · Against a 2-3, the cut runs down the seam between the two top defenders and arrives around the free-throw line while the back line is still shifting toward the ball. Against a 1-3-1 it is more direct still, because the point defender has already committed to the ball side and the cut travels through the space they vacated.

但有一点必须说清楚：面对区域联防时，背掩护的作用远小于切入本身。区域防守不追人，所以常常根本没有人可掩护，掩护人真正的任务是用身体占住区域顶端，并随时准备在中路空出来时接球。把这个动作教成“先做掩护，再切入”的教练，会发现它打区域时经常卡住；教成“球在侧翼的同时切进缝隙”的教练，则不会遇到这个问题。 · One thing has to be said plainly. Against a zone the back screen matters far less than the cut. Zone defenders do not chase, so there is often nobody to screen, and the screener's real job is to occupy the top of the zone and to be ready to catch if the middle opens. Coaches who teach the action as "set the screen, then cut" find it stalls against zone. Coaches who teach it as "cut into the gap while the ball is on the wing" do not.

同样的道理也解释了它为什么禁得起换防。如果两名防守者换掉背掩护，控卫换来的是一个更高更慢的对位，而肘区队员在高位面对的是一个更小的防守人。这个回合并没有跑坏，因为错位本身就是应对，接着把错位打完即可。 · The same logic explains why it holds up against a switch. If the two defenders switch the back screen, the guard has traded one matchup for a taller, slower one, and the elbow player is now guarded at the high post by someone smaller. Nothing about the possession is broken, because the mismatch is the counter and the offense simply plays it.