VIDEOS 1 TO 50

What Is "Player Efficiency Rating" and Does It ACTUALLY Work?

Published: 2017/07/13

Channel: MDJ

Ignore the Player Efficiency Rating, LeBron James should be the NBA MVP | THE HERD

Published: 2017/02/28

Channel: The Herd with Colin Cowherd

Player Efficiency Rating: NBA Terminology Ep. 1

Published: 2017/04/22

Channel: Anime Pharaoh

BIG DATA in the NBA

Published: 2013/11/05

Channel: jacob

Why P.E.R. Should Not Be Used As An Advanced Statistic

Published: 2017/05/11

Channel: Basketball Examined

What Does Player Efficiency Rating Mean?

Published: 2017/09/03

Channel: I Question You

Elitics Model NFL Player Efficiency Rating PER Metric

Published: 2014/04/03

Channel: 42analytics

Player Efficiency meets Fantasy Basketball

Published: 2016/09/28

Channel: Sports.ws

ESPN's John Hollinger: Applying Sports Analytics To Business Analytics

Published: 2011/04/18

Channel: MicrosoftBI

Clash of Clans Player Efficiency Rating

Published: 2013/06/01

Channel: Caleb Tate

What Does Defensive Rating Mean?

Published: 2017/09/03

Channel: I Question You

Steph Curry - Superb Separation (Playoff Edition)

Published: 2016/09/04

Channel: Evin Gualberto

Open Court - Chuck Goes Off On Advanced Stats: Stats Per 48 Minutes

Published: 2017/06/24

Channel: Vicary Videos

The Disappearance And MURDER Of NBA Player Howard Porter

Published: 2017/08/11

Channel: Andy Hoops

NBA's TOP 100 PLAYERS OF 2016-2017!! WHO HAD THE BEST PERFORMANCE!?

Published: 2017/06/26

Channel: Irvin Kelly

Player Efficiency Rating System: Coalition Report Ep.65

Published: 2014/07/21

Channel: Brittality x

Top 5 WORST NBA Players of 2015-2016!

Published: 2016/06/06

Channel: FiveInFive Videos

Basketball Expressions: NBL 2012-13 Player Efficiency Ratings and Advance Stats

Published: 2013/09/25

Channel: Basketball Expressions TV

Dwyane Wade - Postup Powerhouse

Published: 2016/10/28

Channel: Evin Gualberto

PER

Published: 2015/08/03

Channel: Blake Iceton

3SOB.com — Exclusive Interview with Grizzlies VP John Hollinger (Part 2 of 2)

Published: 2013/01/14

Channel: fluidmediagroup

James Harden - Hit Ahead Passes 16/17

Published: 2017/11/04

Channel: Evin Gualberto

Damian Lillard - Fantastic Finisher

Published: 2016/06/24

Channel: Evin Gualberto

3SOB.com — Exclusive Interview with Grizzlies VP John Hollinger (Part 1 of 2)

Published: 2013/01/14

Channel: fluidmediagroup

Comprendre les principales stats avancées du basket

Published: 2017/09/03

Channel: Blhite

Marty Wilkerson Senior Year Highlights 2014-2015

Published: 2015/05/09

Channel: Eddie Broughton

NBA Finals Over/Unders: Steph Curry 6 assists per game

Published: 2017/06/01

Channel: CBS Sports

My Top 10 Rebounds per Game Western Conference 2017

Published: 2017/04/11

Channel: MyTop10Reviews

Kevin Durant - Postup Playmaker/Fatal Faceup 16/17

Published: 2017/11/04

Channel: Evin Gualberto

Top 5 WORST NBA Players of 2014-2015

Published: 2015/08/17

Channel: FiveInFive Videos

LaMarcus Aldridge - Postup Powerhouse

Published: 2016/05/15

Channel: Evin Gualberto

Russell Westbrook - Primetime Passer 16/17

Published: 2017/10/29

Channel: Evin Gualberto

2017 NBA Finals: Game 1 DFS Preview | HotRoster Today

Published: 2017/05/31

Channel: FNTSY Sports Network

Week 10 NFL NextGen Stats: Rushing Efficiency Leaders And Analysis

Published: 2017/11/12

Channel: FNTSY Sports Network

7 NBA Players with Quirky Playstyles

Published: 2017/10/09

Channel: MDJ

Is LeBron James the most clutch player in the NBA? | THE HERD

Published: 2017/04/24

Channel: The Herd with Colin Cowherd

NBA TOP 10 Field Goal Attempts Per Game - All Time

Published: 2016/10/03

Channel: NBA TRACKER

Wake Forest's John Collins Is The FASTEST RISING Draft Prospect!! | #HDRewind Mixtape

Published: 2017/02/17

Channel: HoopDiamonds

Dwyane Wade - Midrange Mastery

Published: 2016/08/14

Channel: Evin Gualberto

Nick Smith Highlight Tape

Published: 2017/04/04

Channel: Nick Smith

How Russell Westbrook Racks Up 10 Rebounds Per Game

Published: 2017/03/26

Channel: D 21

Steph Curry - Superb Separation (Don't Switch)

Published: 2016/09/04

Channel: Evin Gualberto

Michael Morrison (35 Pts / 7 Reb) shows all his class against Pinar Karsiyaka

Published: 2017/02/09

Channel: Basketball Champions League

Stefanie Murphy Highlights 2014/2015 season

Published: 2015/05/03

Channel: Gherdan Sports

Chad Ford - LeBron better than Jordan because he's a complete player. Smh!

Published: 2016/06/22

Channel: KJRawX

ACC Players of the Year Announced - ACC NOW

Published: 2012/11/28

Channel: ACC Digital Network

EcknerJoseph #20

Published: 2013/08/24

Channel: Renice Jackson

Walter Hodge (24 Pts / 9 Reb) is the man of the game vs. Usak Sportif

Published: 2016/12/01

Channel: Basketball Champions League

Lauren Jackson's jersey retirement ceremony by WNBA Seattle Storm | 15 Jul 2016

Published: 2016/07/16

Channel: The Pick and Roll

Steph Curry - Lefty Wonder 15/16

Published: 2017/03/14

Channel: Evin Gualberto

(Redirected from Player Efficiency Rating)

The **player efficiency rating** (PER) is John Hollinger's all-in-one basketball rating, which attempts to boil down all of a player's contributions into one number. Using a detailed formula, Hollinger developed a system that rates every player's statistical performance.^{[1]}

PER strives to measure a player's per-minute performance, while adjusting for pace. A league-average PER is always 15.00, which permits comparisons of player performance across seasons.

PER takes into account accomplishments, such as field goals, free throws, 3-pointers, assists, rebounds, blocks and steals, and negative results, such as missed shots, turnovers and personal fouls. The formula adds positive stats and subtracts negative ones through a statistical point value system. The rating for each player is then adjusted to a per-minute basis so that, for example, substitutes can be compared with starters in playing time debates. It is also adjusted for the team's pace. In the end, one number sums up the players' statistical accomplishments for that season.

Hollinger's work has benefitted from the observations of sabermetric baseball analysts, such as Bill James. One of the primary observations is that traditional counting statistics in baseball, like runs batted in and wins, are not reliable indicators of a player's value. For example, runs batted in is highly dependent upon opportunities created by a player's teammates. PER extends this critique of counting statistics to basketball, noting that a player's opportunities to accumulate statistics are dependent upon the number of minutes played as well as the pace of the game.

PER largely measures offensive performance. Hollinger freely admits that two of the defensive statistics it incorporates—blocks and steals (which was not tracked as an official stat until 1973)—can produce a distorted picture of a player's value and that PER is not a reliable measure of a player's defensive acumen. For example, Bruce Bowen, widely regarded as one of the best defenders in the NBA (at least through the 2006–07 season), has routinely posted single-digit PERs.

"Bear in mind that this rating is not the final, once-and-for-all answer for a player's accomplishments during the season. This is especially true for players such as Bruce Bowen and Trenton Hassell who are defensive specialists but don't get many blocks or steals."

Some have argued that PER gives undue weight to a player's contribution in limited minutes, or against a team's second unit, and it undervalues players who have enough diversity in their game to play starter's minutes.

PER has been said to reward inefficient shooting. To quote Dave Berri, the author of *The Wages of Wins*:

"Hollinger argues that each two point field goal made is worth about 1.65 points. A three point field goal made is worth 2.65 points. A missed field goal, though, costs a team 0.72 points. Given these values, with a bit of math we can show that a player will break even on his two point field goal attempts if he hits on 30.4% of these shots. On three pointers the break-even point is 21.4%. If a player exceeds these thresholds, and virtually every NBA player does so with respect to two-point shots, the more he shoots the higher his value in PERs. So a player can be an inefficient scorer and simply inflate his value by taking a large number of shots."

Hollinger responded, via a post on ESPN's TrueHoop blog:

Berri leads off with a huge misunderstanding of PER—that the credits and debits it gives for making and missing shots equate to a “break-even” shooting mark of 30.4% on 2-point shots. He made this assumption because he forgot that PER is calibrated against the rest of the league at the end of the formula.

Actually, if we took a player that was completely average in every other respect for the 2006–07 season—rebounds, free throws, assists, turnovers, etc.—and gave him a league-average rate of shots, and all of them were 2-pointers, and he shot 30.4%, he'd end up with a PER of 7.18. As long-time PER fans know, that would make him considerably worse than nearly every player in the league.

To end up with a league-average PER of 15.00, the actual break-even mark in this case is 48.5%, which is exactly what the league average is on 2-point shots this season.

Hollinger has set up PER so that the league average, every season, is 15.00, which produces sort of a handy reference guide:^{[2]}

All-time great season | 35.0+ |

Runaway MVP candidate | 30.0-35.0 |

Strong MVP candidate | 27.5-30.0 |

Weak MVP candidate | 25.0-27.5 |

Definite All-Star | 22.5-25.0 |

Borderline All-Star | 20.0-22.5 |

Second offensive option | 18.0-20.0 |

Third offensive option | 16.5-18.0 |

Slightly above-average player | 15.0-16.5 |

Rotation player | 13.0-15.0 |

Non-rotation player | 11.0-13.0 |

Fringe roster player | 9.0-11.0 |

Player who won't stick in the league | 0-9.0 |

Only 21 times has a player posted a season efficiency rating over 30.0 (with more than 15 games played in that season), with the highest score being 31.84. Michael Jordan and LeBron James lead with four 30+ seasons, with Shaquille O'Neal and Wilt Chamberlain having accomplished three each, and David Robinson, Dwyane Wade, Chris Paul, Tracy McGrady, Anthony Davis, Stephen Curry and Russell Westbrook^{[3]} having accomplished one each. The 2008–2009 season was unique in that it was the only season in which more than one player (LeBron James (31.67), Dwyane Wade (30.46), and Chris Paul (30.04)) posted efficiency ratings of over 30.0.

As of 20 April 2016^{[update]}^{[4]}

** = Hall of Fame* *^ = Active*

Prior to the 2013–2014 season, LeBron James was on the verge of surpassing Michael Jordan's career PER to take the number one spot.^{[5]}^{[6]} (it should be noted that even if James should take the number one spot from Jordan, he is still mid-career. As the metric is averaged over the length of a player's entire career a decrease in efficiency later in his career means a player can move down in the ranking. For example, Jordan's PER took a big hit in the final two years of his career when he returned to the game with the Washington Wizards, posting 20.7 in his penultimate season and 19.3 in his final season, compared to his career high of 31.7).^{[7]} The debate was intensified on 1 October 2013, with Jordan stating that he would have liked to have played against LeBron, and believes he would have won a one-on-one encounter.^{[8]} As a result, many news features^{[9]}^{[10]}^{[11]} are focusing on comparing the two players, with some using the PER metric to compare the two players. At the conclusion of the 2012–2013 NBA season Miami Heat head coach, Erik Spoelstra, stated that comparing players from different generations is the equivalent to comparing "apples and oranges. You’ll never be able to tell [how James stacks up to Jordan or Magic Johnson] because they didn't play against each other. The game is different now than when it was played in the 1980s or even before that".^{[12]}

Comparing players from different generations using PER presents several problems, this is primarily due to the rule changes and the changes in statistical data collected from different eras (although many other factors could be taken into consideration, even down to the increased sample size as the NBA grew through incorporating more teams). Some of the more important rule changes that should be considered include; some of the players on this list played before the three point shot, blocks, and steals stats were officially recorded (Wilt Chamberlain, Bill Russell, etc.). Blocked shots and steals were first officially recorded in the NBA during the 1973–74 season. The three point shot entered the league in 1979–80 season. During the 1990s and 2000s numerous rule changes were incorporated, the "three point foul" and "clear path" rules were both introduced in the 1995–96 season with the effect of increasing the number of free throws, hand-checking (the amount of contact a defender may make with an opposing player) was banned in 1994 and the use of elbows was banned in 1997 (both rules had seen various degrees of limitation by earlier rule changes) although neither was fully implemented until 2004. The 2004 rule changes, which also included calling the defensive 3 second rule ("[...] a defensive player may not station himself in the key area longer than three seconds"—a longstanding rule which had been ignored by referees) had a major effect, opening up the game and allowing a more free-flowing offense; it encouraged aggressive inside attack based plays (to draw fouls), and has increased the number of fouls given when contact is made on players who drive to the basket.^{[13]} Former ABA and NBA Coach Larry Brown is quoted as saying "The college game is much more physical (than the NBA) [...] I always tease Michael (Jordan), if he played today, he'd average 50".^{[14]}

All calculations begin with what is called unadjusted PER (uPER). The formula is:

When multiplied out and refactored, the equation above becomes:

Where

- ,
- ,
- .

With

*tm*, the prefix, indicating of team rather than of player;*lg*, the prefix, indicating of league rather than of player;*min*for number of minutes played;*3P*for number of three-point field goals made;*FG*for number of field goals made;*FT*for number of free throws made;*VOP*for value of possession (but in reference to the league, in this instance);*RB*for number of rebounds:*ORB*for offensive,*DRB*for defensive,*TRB*for (total) combined,*RBP*for percentage of offensive or defensive;- others being outlined in basketball statistics.

Once uPER is calculated, it must be adjusted for team pace and normalized to the league to become PER:

This final step takes away the advantage held by players whose teams play a fastbreak style (and therefore have more possessions and more opportunities to do things on offense), and then sets the league average to 15.00.

Also note that it is impossible to calculate PER (at least in the conventional manner described above) for NBA seasons prior to 1978, as the league did not keep track of turnovers among other advanced statistics before that year.

**^**"Calculating PER".*Basketball Reference*. Retrieved 5 September 2013.**^**Hardwood Paroxysm**^**https://www.basketball-reference.com/play-index/psl_finder.cgi?request=1&match=single&type=totals&per_minute_base=36&per_poss_base=100&season_start=1&season_end=-1&lg_id=NBA&age_min=0&age_max=99&is_playoffs=N&height_min=0&height_max=99&birth_country_is=Y&as_comp=gt&as_val=0&pos_is_g=Y&pos_is_gf=Y&pos_is_f=Y&pos_is_fg=Y&pos_is_fc=Y&pos_is_c=Y&pos_is_cf=Y&c1stat=per&c1comp=gt&c1val=29.95&c2stat=g&c2comp=gt&c2val=20&order_by=per**^**"NBA & ABA Career Leaders and Records for Player Efficiency Rating".*Basketball Reference*. Retrieved 1 August 2017.**^**ESPN.com - "2012-13 Hollinger NBA Player Statistics - All Players" - Accessed 6 October 2013**^**Basketball Reference, "LeBron James". Accessed 6 October 2013**^**Basketball Reference, "Michael Jordan" - Accessed 6 October 2013.**^**NBA.com - "Jordan proclaims he could beat LeBron in prime". Accessed 6 October 2013.**^**Busfield, Steve.*The Guardian*, Michael Jordan vs LeBron James: who is better?" Accessed 6 October 2013**^**Helin, Kurt. NBCsports.com "LeBron says he wants to be greatest of all time, still "far away from it". Accessed 6 October 2013**^**Lariviere, David.*Forbes*, "LeBron James Will Eventually Top Michael Jordan As Basketball's Greatest Player". Accessed 6 October 2013.**^**Golliver, Ben.*Sports Illustrated*, "Spoelstra: Comparing LeBron to Jordan is impossible because 'game is different now'" - Accessed 6 October 2013**^**NBA.com - NBA Rules History. Accessed 6 October 2013.**^**Aldridge, David. NBA.com - Rules changes have affected defensive philosophies. Accessed 6 October 2013

- CREZ Basketball Systems Inc., Software to score your own basketball games and view PER player and lineup statistics
- An in-depth description of how to calculate PER
- Hollinger's articles at SI
- Basketball-Reference.com, Historical NBA statistical site (includes PER)
- KnickerBlogger.net
- ESPN.com Insider (subscription service)

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