Efficiency Ratings: Michigan State

Using an NBA Efficiency Rating Formula, TDD tracks the best statistical performances of the season

A quick way NBA coaches measure a player's game performance is by evaluating his efficiency. In order to find a player's efficiency the following formula is used:

((Points + Rebounds + Assists + Steals + Blocks) - ((Field Goals Att. - Field Goals Made) + (Free Throws Att. - Free Throws Made) + Turnovers)).

For example, compare the following stat lines:

Player A: 17 points (5-of-22 FG, 7-9 FT), 8 rebounds, 6 assists, 3 steals, 4 turnovers.

Player B: 15 points (5-8 FG, 3-4 FT), 4 rebounds, 7 assists, 2 turnovers

Latest Game:

Justise Winslow scored 19 points, fellow freshman Jahlil Okafor added 18, and senior Quinn Cook had 17 to lead top-seeded Duke to an 81-61 victory over Michigan State on Saturday and into yet another title game in the city known for a 500-mile auto race.

The Blue Devils won it all in Indianapolis in 1991, their first title under Mike Krzyzewski. The winningest men's Division I coach, who has a 9-3 record in national semifinal games, led them to their fourth and most recent title in 2010, also in Indianapolis.

Defensively, it was a team effort, just the way Krzyzewski has stressed for his 35 seasons at Duke. What had been wide open 3-pointers early for Michigan State became contested shots, and when the Blue Devils started getting up and into the Spartans, the points were suddenly tough to come by.

"They did a good job of taking me away," said Michigan State's Denzel Valentine, who had nine of his 22 points in that opening run with three 3-pointers. "I got hot and they started denying a little bit and started forcing us to take bad shots, and the next thing you know they had the lead."

The two Duke freshmen put up some impressive stats in their first Final Four game. Winslow, who played through some early foul trouble, had nine rebounds and was 5-for-7 from the field while Okafor grabbed six rebounds and was 7-for-11 from the field.


(change from previous game)
  • Jahlil Okafor +19 (+8)
  • Justise Winslow +26 (+11)
  • Tyus Jones +11 (-7)
  • Quinn Cook +16 (+8)
  • Amile Jefferson +6 (+2)
  • Grayson Allen +8 (+9)
  • Matt Jones +8 (-11)
  • Marshall Plumlee +4 (+3)

Notes: Duke went inside early to Okafor knowing the Spartans didn’t have an answer for the big man on the offensive end, and the strategy worked as the freshman finished with 18 points and six rebounds while missing only two of eight shots from the field. The only weights to Okafor’s score were at the free throw line (missed three of seven shots) and the 0-to-2 assist-to-turnover ratio.

With Okafor creating all manner of foul problems for the Spartans, Duke began to find lanes to the basket which were immediately filled by Winslow who posted yet another monster game with 19 points, nine rebounds, and a pair of steals and assists. Winslow also shot well, going 5-of-7 from the field and 9-of-11 from the charity stripe to post a +26.

The starting backcourt played well, but it was almost an afterthought at times. Still, Cook and Jones combined to hit 9-of-20 from the floor and a perfect 6-of-6 from the line to post a combined +27.


Throughout the season TDD will track the various highs and lows using the formula.

Ten Most Efficient Performances

  • Jahlil Okafor v. Elon (+37)
  • Tyus Jones v. North Carolina (+34)
  • Jahlil Okafor v. NC State (+33)
  • Jahlil Okafor v. Furman (+32)
  • Jahlil Okafor v. San Diego State (+32)
  • Jahlil Okafor v. Boston College (+32)
  • Justise Winslow v. San Diego State (+31)
  • Jahlil Okafor v. Virginia Tech (+30)
  • Amile Jefferson v. Furman (+30)
  • Jahlil Okafor v. Wofford (+30)
  • Justise Winslow v. Syracuse (+29)

Five Least Efficient Performances*

  • Justise Winslow (-5) v. Miami
  • Rasheed Sulaimon (-4) v. Temple
  • Grayson Allen (-3) v. Boston College
  • Grayson Allen (-3) v. Robert Morris
  • Matt Jones (-2) v. Elon


Cumulative Season ratings for the Blue Devils. (E/game)*
  • Jahlil Okafor +774 (20.9)*
  • Justise Winslow +588 (15.5)
  • Tyus Jones +572 (15.1)
  • Quinn Cook +566 (14.9)
  • Amile Jefferson +394 (10.4)
  • Matt Jones +241 (6.3)
  • Marshall Plumlee +189 (5.0)
  • Grayson Allen +117 (3.4)*

*- Games Factored In: Allen (34); Okafor (37)


Cumulative Season ratings per minute for the Blue Devils. (E/minutes)
  • Jahlil Okafor: 0.690
  • Justise Winslow: 0.533
  • Marshall Plumlee: 0.516
  • Amile Jefferson: 0.486
  • Tyus Jones: 0.445
  • Quinn Cook: 0.416
  • Grayson Allen: 0.389
  • Matt Jones: 0.292


Tracking the most and least efficient performances by player
  • Jahlil Okafor 37 / 7
  • Amile Jefferson 30 / -1
  • Quinn Cook 29 / 0
  • Tyus Jones 34 / 1
  • Grayson Allen 28 / -3
  • Justise Winslow 31 / -5
  • Marshall Plumlee 19 / 0
  • Matt Jones 19 / -2


- One more game remains to settle the Efficiency Ratings for the 2014-2015 season. Okafor has long been established as the most efficient player on the roster and will win the overall ratings title by a significant margin. However, second place is up for grabs between Cook, Jones, and Winslow though it would appear as though the last month or so has thrust Winslow into a can’t lose situation - because if Winslow loses a 16 point margin to Jones or a 22 point margin to Cook it means he didn’t play anywhere close to the level we’ve seen of late…which means Duke didn’t beat Wisconsin.

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