原文网址:
http://hangtime.blogs.nba.com/2014/02/28/pick-and-roll-data-likes-the-suns/
部落格图文版:
http://leelou.pixnet.net/blog/post/32054195
On the Washington Wizards’ first possession of their big, triple-overtime
win in Toronto on Thursday, John Wall and Marcin Gortat ran a side
pick-and-roll. The same primary action produced two big free throws in the
final minute of the second overtime and a huge three-point play in the third
OT.
SportVU cameras captured every pick-and-roll run in the 63 minutes of
basketball at the Air Canada Centre on Thursday. The folks at STATS LLC have
been tracking pick-and-rolls via SportVU this season, opening a new door as
we look to learn more about the game, and have provided some of the data to
NBA.com.
华盛顿巫师在多伦多那场三度延长的胜利中，John Wall和Marcin Gortat开赛第一个play
就是pick-and-roll，二度加赛的最后关头又靠着挡切赚到两罚，然后3OT时再故计重施来
了个三分打。
SportVU的镜头记录了整场比赛63分钟里的所有挡切进攻，透过这套系统他们也同时追踪
了本季各队pick-and-roll的数据，为深度解析NBA的比赛打开一扇新的门，也替NBA.com
提供一些不一样的资料。
Heading into Thursday’s game, Wall and Gortat had run almost 200 more
pick-and-rolls than any other combination in the league. They’ve been a
pretty solid combination, with the Wizards scoring 1.06 points per possession
when the pair ran a pick-and-roll. That mark is a notch better than the
league average of 1.03 (on pick-and-roll possessions) and ranks 87th among
209 pairs of teammates who have run pick-and-rolls on at least 100
possessions.
But there’s a big difference between a Wall-Gortat pick-and-roll and a
Wall-Nene pick-and-roll, which has produced just 0.85 points per 100
possessions. That’s one reason why Washington ranks 29th in pick-and-roll
efficiency (better than only the Milwaukee Bucks).
在这场比赛之前，Wall和Gortat执行挡切的次数比联盟中其他的组合都还要多出200次以
上，他们确实是不错的组合，当这两个人pick-and-roll时巫师平均拿1.06分，比联盟平
均的1.03分(只计算执行挡切的回合)还要高，在配合超过100次挡切的209组搭档中，排名
第87。
当Wall和Nene执行pick-and-roll时就不一样了，他们每回合只能拿到0.85分，这也是巫
师在pick-and-roll时的效率只能排名第29的原因之一(只赢过密尔瓦基公鹿)。
Wall has been more likely to pass to Nene than Gortat, but that hasn’t been
a good idea, as Nene has shot just 16-for-48 (33 percent) on those plays.
You see that Wall has shot worse when he’s come off a Nene screen, perhaps
because Gortat sets a better pick and/or because Nene’s defenders are more
mobile and able to defend Wall on a hedge or switch.
然而Wall其实比较喜欢传球给Nene更甚于给Gortat，但这不是一个好的选择，因为Nene在
这些机会中总共只有48投16中(33%)的命中率。
同时你会发现当Nene帮忙单挡时Wall的投篮表现较差，可能是因为Gortat的挡人比较确实
，或者是Nene的防守者通常比较有活动力，能够有效限制Wall。
The Wizards will miss Nene, who’s out six weeks with an MCL sprain, but
mostly on defense. The Wizards have allowed slightly less than a point per
possession when he’s been the big defending a pick-and-roll. They’ve been
almost seven points per 100 possessions better with him on the floor.
Offensively, they’ve been a point per 100 possessions better with him on the
bench. And their pick-and-roll game might actually get better in these six
weeks without him.
Nene因为膝盖内侧韧带扭伤将会缺席巫师接下来6周的比赛，但对防守的影响层面比较大
。当他在场上时巫师每回合的失分略小于1分，当他下场后DefRtg%大概要增加7分之多。
在进攻的部份，当他休息时球队的进攻效率会稍微好一点，看来未来6个礼拜巫师的
pick-and-roll会表现地更出色。
Top of the list
The Dallas Mavericks have been the most prolific pick-and-roll team in the
league, but the Phoenix Suns have been the best, scoring 1.09 points per
pick-and-roll possession, just a hair better than the Houston Rockets and
Portland Trail Blazers.
The Suns’ success starts with Goran Dragic and Channing Frye, the aggressive
ball-handler and the 6-foot-11 floor spacer. They’ve been the league’s top
pick-and-roll combination among those with at least 100 pick-and-roll
possessions.
接着来看看NBA中pick-and-roll的佼佼者。
达拉斯小牛是联盟里使用挡切战术最多的球队，但是凤凰城太阳才是最佳的执行者，每次
启动pick-and-roll平均能得到1.09分，以些微的差距领先休士顿火箭和波特兰拓荒者。
太阳的成功来自于Goran Dragic和Channing Frye，一位是积极的持球者，而另一位是能
够拉开空间的6呎11吋长人，他们在配合超过100次pick-and-roll的组合中是最顶尖的搭
档。
Dragic has run almost the same amount of pick-and-rolls with Miles Plumlee
(407 screens on 390 possessions) as he has with Frye (425, 392). But the Suns
have scored only 1.03 points per possession on the Dragic-Plumlee
pick-and-rolls. Clearly, Dragic prefers to have a screener who pops out for a
jumper, rather than one who rolls to the rim.
On those 390 Dragic-Plumlee possessions, Dragic has passed the ball 232
times, but only 59 times (25 percent) to Plumlee. On the 392 Dragic-Frye
possessions, he’s passed the ball 234 times, and 113 of those passes (48
percent) have gone to Frye.
Dragic和Miles Plumlee配合的次数(390个回合中有407次掩护)几乎和搭配Frye一样多
(392个回合中有425次掩护)。不过太阳在Dragic-Plumlee挡切时平均只得到1.03分，远逊
于Dragic-Frye拿下的1.30分。显然地，Dragic比较喜欢掩护者拉出去跳投而非往篮框空
切。
在Dragic-Plumlee执行的390个回合里，Dragic一共传了232次球，但只有59次(25%)是传
给Plumlee。然而Dragic-Frye的组合里，234次的传球有113次(48%)是送给了Frye。
Overall, the Suns have been efficient when Dragic has the ball, scoring 1.16
points per possession from his 1,238 pick-and-rolls. That’s the best mark
among 46 starting point guards and other high-usage perimeter players who
have been the pick-and-roll ball-handler for at least 300 possessions. And who
’s next on the list might surprise you.
整体来说，当Dragic持球时太阳的进攻便很有效率，在他主导的1238次pick-and-roll中
平均每回合得分为1.16分。执行挡切超过300次的球员共46位，其中包括先发控卫以及其
他高持球率的外围球员，他是当中最优秀的。而这份名单的第2名可能会让你讶异。
DeRozan’s numbers seem a little fluky. He’s shot just 41 percent out of
pick-and-rolls, has recorded an assist on just 5.8 percent those 690
possessions (the fourth lowest rate of the group), and averages less than one
secondary assist (where his pass directly leads to somebody else’s assist)
per game. But he has drawn fouls on 9.4 percent of his pick-and-roll
possessions, a rate on par with that of LeBron James.
DeRozan的数据似乎有点运气成份，他pick-and-roll后的命中率只有41%，在690个回合中
只有5.8%传出助攻(名单中第4低)，平均每场只有不到1的次要助攻(secondary assist:
传球给队友完成助攻的次数，简单讲就是助攻的助攻)。不过他的挡切进攻有9.4%的比例
能要到犯规，这已经到达LeBron James的水准了。
Some more notes from this list…
It’s interesting that James has had good success with Chris Bosh, but Dwyane
Wade hasn’t. Wade has actually shot better (18-for-32) than James has
(14-for-31) coming off Bosh screens, but Bosh has shot better when receiving
a pick-and-roll pass from James (15-for-22) than he has when getting one from
Wade (9-for-25). The shooting numbers, of course, are some small sample sizes.
名单上值得一提的还有以下几点…
非常有趣的是，James和Chris Bosh配合地很不错，而Dwyane Wade则不然。事实上在Bosh
的掩护后，Wade的投篮(32投18中)是比James(31投14中)还要好的，不过当考虑Bosh接获
传球的命中率时，Wade(9-25)传球的结果比James(15-22)还差。当然这些数据的样本空间
还不太够，不能就这样下定论。
Of the 46 pick-and-roll ball-handlers I looked at, the most likely to shoot
is Tony Wroten, who has taken a shot on 31.0 percent of the screens he’s
come off of. Next on the list are Nick Young (30.7 percent), Reggie Jackson
(30.0 percent), Jamal Crawford (29.6 percent) and Rudy Gay (29.6) percent.
The players least likely to shoot are Kendall Marshall (12.4 percent),
Patrick Beverley (12.9 percent), Mario Chalmers (14.5 percent), George Hill
(15.9 percent) and Ty Lawson (16.3 percent).
James (20.1 percent) is less likely to shoot than Chris Paul (21.3 percent),
Dragic (21.7 percent) or Wall (22.1 percent).
在这46位持球者中，pick-and-roll后最喜欢自己出手的是Tony Wroten，他有31%的比例
会把球投掉，紧跟在后的是Nick Young (30.7%)、Reggie Jackson (30.0%)、Jamal
Crawford (29.6%)和Rudy Gay (29.6%)。
最不喜欢出手投篮的是Kendall Marshall (12.4%)、Patrick Beverley (12.9%)、Mario
Chalmers (14.5%)、George Hill (15.9%)和Ty Lawson (16.3%)。
而LeBron James自己出手的比例(20.1%)甚至比Chris Paul (21.3%)、Dragic (21.7%)和
Wall (22.1%)这些控球后卫还少。
The guy most likely to pass to the screener is Stephen Curry. Of Curry’s 830
passes out of pick-and-rolls, 56.3 percent have gone to the screener. Next on
the list are Russell Westbrook (55.3 percent), Michael Carter-Williams (52.1
percent), Deron Williams (50.7 percent) and Kyrie Irving (48.7 percent).
The guy least likely to pass to the screener is James Harden (27.2 percent).
So when they come off pick-and-rolls, Curry is twice as likely to pass to the
screener than Harden is. After Harden comes Carmelo Anthony (27.4 percent),
James (28.0 percent), Jrue Holiday (29.0 percent) and Tyreke Evans (30.3
percent).
最愿意传球给掩护者的是Stephen Curry，在Curry总共830次pick-and-roll中，有56.3%
的比例会将球传给掩护者。后续的排名为Russell Westbrook (55.3%)、Michael
Carter-Williams (52.1%)、Deron Williams (50.7%)和Kyrie Irving (48.7%)。
反之最不愿意传球给掩护者的是James Harden (27.2%)，也就是说执行挡切时，Curry传
给掩护者的次数是Harden的2倍。排在Harden之后的还有Carmelo Anthony (27.4%)、
James (28.0%)、Jrue Holiday (29.0%)和Tyreke Evans (30.3%)。
Six of the 46 have shot better than 50 percent when coming off a
pick-and-roll: Chalmers (54.8 percent), Dragic (53.2 percent), James (52.5
percent), Wade (51.3 percent), Kevin Durant (50.2 percent) and Tony Parker
(50.2 percent).
Get this: Durant has recorded an assist on a higher percentage of his
pick-and-roll possessions (13.0 percent) than James (10.3 percent) and more
than twice as often as Paul George (6.0 percent).
有6名持球者在执行挡切后的投篮命中率高于50%: Chalmers (54.8%)、Dragic (53.2%)、
James (52.5%)、Wade (51.3%)、Kevin Durant (50.2%)和Tony Parker (50.2%)。
值得注意的是，Durant在挡切的配合中送出助攻的机会(13.0%)高于James (10.3%)，甚至
是Paul George (6.0%)的两倍之多。
Location is key
SportVU keeps track of where every pick-and-roll takes place. As you might
expect, the closer to the basket the screen is set, the more likely the
offense is to score. The most efficient pick-and-roll spot on the floor is at
the high post (around the foul line, inside the 3-point arc), which produces
1.05 points per possession.
But high post pick-and-rolls account for only 4 percent of all
pick-and-rolls. The most common location is the top of the key, which sees 41
percent of pick-and-roll action. Next is the wing (foul-line extended), which
sees 28 percent and the “sideline point” area (out by the coach’s box
line) at 25 percent.
执行挡切的位置也很关键。
SportVU持续追踪了每次pick-and-roll发生的位置，一如预期地越靠近篮框得分的机会就
越高，最有效率的位置在高位(high post: 大概在罚球线附近，弧顶三分线内)，平均每
回合有1.05分。
不过高位pick-and-roll只占了全部挡切的4%，最常见的位置则是在弧顶，占了41%的比例
。再来是侧翼(罚球线两侧)的28%，以及边线附近(教练区前面)的25%。
We’re just scratching the surface here. And that’s the issue with SportVU.
There’s so much data to digest, it has to be compartmentalized and put into
the proper context. But we’re really starting to see how much it has to
offer.
Next week, I’ll take a look at pick-and-roll defense. (Hint: Indiana good,
Portland bad.)
目前为止我们只是粗浅地做些分析，不过这就是研究SportVU的困难之处，数据量实在是
太大了，这需要仔细地分类并找寻其中的脉络，不过我们确实开始感受到它能带来非常多
的资讯。
下次将会分析各队防守pick-and-roll的表现。