Efficiency Ratings: Army

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

Who had the better game? Using the above referenced formula player B, who hit five of eight shots and committed two turnovers registered a +20 efficiency total while Player A who missed 17 shots and had four turnovers had just a +11 rating.


Tyus Jones had 16 points and a season-high 10 assists, and No. 4 Duke beat Army 93-73 on Sunday to bring Krzyzewski within 10 wins of 1,000 for his career.

Fellow freshman Jahlil Okafor added 21 points while Quinn Cook and Rasheed Sulaimon had 13 apiece for the Blue Devils (7-0).

They shot 52 percent, built a 43-25 rebounding advantage and overcame a season-worst 4-of-19 performance from 3-point range.

Duke tuned up for Wednesday night's visit to No. 2 Wisconsin by helping Krzyzewski defeat his alma mater and earn career victory No. 990.

vs. ARMY

(change from previous game)

Notes: Once again Duke was paced by the play of the starting front court as Okafor and Jefferson were too much for Army to deal with. The two combined to shoot 11-of-17 from the floor, grabbed 20 rebounds and scored 28 points. Both players would have benefitted from improved trips to the free throw line with Okafor hitting just five of his nine attempts and Jefferson shooting one of three. Those numbers need to improve not only for efficiency scores, but for Duke to be compete in big games.

After struggling for a few weeks, Tyus Jones seems to have broken out of his slump. The Duke point guard recorded 16 points, grabbed five rebounds, and handed out 10 assists against zero turnovers. The result was a career and season high in efficiency points with a +27.

Off the bench Duke got a lift from Plumlee who has yet to miss a free throw all season (10-of-10), and was a perfect 4-of-4 from the charity stripe and 2-of-2 from the field. He also grabbed five rebounds.


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

Ten Most Efficient Performances

  • Jahlil Okafor v. Furman (+32)
  • Amile Jefferson v. Furman (+30)
  • Jahlil Okafor v. Presbyterian (+28)
  • Tyus Jones v. Army (+27)
  • Quinn Cook v. Michigan St (+24)
  • Tyus Jones v. Michigan St (+22)
  • Jahlil Okafor v. Fairfield (+22)
  • Grayson Allen v. Presbyterian (+22)
  • Tyus Jones v. Presbyterian (+21)
  • Jahlil Okafor v. Michigan St (+21)

Five Least Efficient Performances*

  • Rasheed Sulaimon (-4) v. Temple
  • Semi Ojeleye (-2) v. Temple
  • Marshall Plumlee (+0) v. Michigan St
  • Rasheed Sulaimon (+0) v. Michigan St
  • Matt Jones (+3) v. Temple


Cumulative Season ratings for the Blue Devils. (E/game)*
  • Jahlil Okafor +150 (21.4)
  • Quinn Cook +126 (18.0)
  • Amile Jefferson +117 (16.7)
  • Tyus Jones +102 (14.6)
  • Justise Winslow +88 (12.6)
  • Marshall Plumlee +57 (8.1)
  • Matt Jones +55 (7.9)
  • Rasheed Sulaimon +45 (6.8)
  • Grayson Allen +41 (6.8)*
  • Semi Ojeleye +20 (45)*

*- Games Factored In: Allen (6), Ojeleye (6)


Cumulative Season ratings per minute for the Blue Devils. (E/minutes)
  • Jahlil Okafor: 0.781
  • Amile Jefferson: 0.731
  • Marshall Plumlee: 0.713
  • Grayson Allen: 0.672
  • Quinn Cook: 0.586
  • Tyus Jones: 0.540
  • Justise Winslow: 0.503
  • Matt Jones: 0.440
  • Rasheed Sulaimon: 0.357
  • Semi Ojeleye: 0.317


Tracking the most and least efficient performances by player
  • Jahlil Okafor 32 / 13
  • Amile Jefferson 30 / 7
  • Quinn Cook 24 / 12
  • Tyus Jones 27 / 3
  • Grayson Allen 22 / 0
  • Rasheed Sulaimon 20 / -4
  • Justise Winslow 21 / 5
  • Marshall Plumlee 17 / 1
  • Matt Jones 16 / 2
  • Semi Ojeleye 8 / -2


- Jones’ big day moves him up in the per minute and cumulative standings for the season. That’s especially impressive in the per minute ratings since the Duke point guard played 34 ticks against Army and still managed to significantly up his total.

- Foul trouble has limited Justise Winslow over the past few games and while he’s been, arguably, Duke’s best player this year, he’s dropped in our efficiency ratings. He’s now the least efficient member of the starting five thanks to a below 50 percent shooting percentage from the floor and only a 60 percent clip from the charity stripe.

The Devils Den Top Stories