Efficiency Ratings: Maryland

Using the 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 NBA 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.

For reference, last year LeBron James posted the two most efficient games of the season with a +54 (37 points on 11-of-17 FG & 9-10 FT, 12 rebounds, 11 assist, 2 steals, 1 block, and 2 turnovers) and +50 (40 points on 16-of-23 FG & 6-6 FT, 8 rebounds, 8 assist, 1 steal, 2 blocks, and 2 turnovers) rating.

Early on against the Terrapins there was a clear advantage inside and Duke quickly began attacking in the form of the Plumlee brothers. Despite some patches of questionable shot selection from the perimeter (where Duke struggled throughout much of the night), when the Blue Devils needed to control the pace and get points, they went inside. The Terps battled for a while, and actually rallied to take the lead midway through the second half before Duke clamped down and won going away.

v. Maryland
(change from previous game)

Per minute Efficiency
  • Austin Rivers 0.237
  • Seth Curry 0.161
  • Andre Dawkins 0.136
  • Mason Plumlee 1.129
  • Miles Plumlee 0.556
  • Ryan Kelly 0.750
  • Josh Hairston 0.143
  • Tyler Thornton 0.276
  • Quinn Cook 0.000
  • Michael Gbinije 0.000

Notes: Mason Plumlee's performance was the best of the season for any Blue Devils, and just one off the best of his career (he had a +36 last season against Marquette). It's also the second highest point total ever posted under the TDD Ratings. Mason not only rebounded, he also scored efficiency and he hit his free throws (5-of-5). For the duration of the season it has been pointed out that once the 6'10 junior began to figure things out at the charity stripe he'd be Duke's most dangerous weapon. On Wednesday night he proved it to be so.

Fellow post rotation players Ryan Kelly and Miles Plumlee also scored well enough with Kelly hitting a +18 mark and the elder Plumlee going for +10. Kelly's score comes on the strength of shooting and blocked shots while Plumlee rebounded, scored, and was efficient from the field. It was good to have the inside game going because….

The perimeter was simply off. Duke's starting backcourt of Dawkins, Curry, and Rivers combined for just a +17 rating. Dawkins, who shot just 1-of-6 from the field, scored a +3 while Curry continued his run of slumping offensive play with a +5. Rivers did manage a +9 thanks to a season high five rebounds while also dishing out three assists. Rivers managed to get to 10 points on 12 shots as well. Off the bench Tyler Thornton posted his second straight +8 efficiency score.


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

Ten Most Efficient Performances

  • Mason Plumlee +35 (v. Maryland)
  • Ryan Kelly +30 (v. Wake Forest)
  • Mason Plumlee +29 (v. Colorado St.)
  • Seth Curry +28 (v. Michigan St.)
  • Ryan Kelly +28 (v. Penn)
  • Andre Dawkins +26 (v. Michigan St.)
  • Miles Plumlee +26 (v. W. Michigan)
  • Ryan Kelly +25 (v. Georgia Tech)
  • Mason Plumlee +25 (v. Belmont)
  • Mason Plumlee +25 (v. Temple)
  • Mason Plumlee +23 (v. Davidson)

Five Least Efficient Performances*

  • Austin Rivers -3 (v. Clemson)
  • Andre Dawkins -2 (v. Temple)
  • Tyler Thornton -2 (v. Tennessee)
  • Austin Rivers -2 (v. Michigan St.)
  • Josh Hairston -1 (v. Michigan St.)
*- players must play at least 5 minutes or factor into the box score to be considered for per game E-ratings

Ten Most Efficient Per Minute Performances

  • Andre Dawkins 1.250 (v. Colorado St.)
  • Quinn Cook 1.174 (v. W. Michigan)
  • Mason Plumlee 1.160 (v. Colorado St)
  • Miles Plumlee 1.158 (v. Colorado St)
  • Mason Plumlee 1.040 (v. W. Michigan)
  • Mason Plumlee 1.129 (v. Maryland)
  • Miles Plumlee 1.118 (v. Penn)
  • Ryan Kelly 1.111 (v. Wake Forest)
  • Ryan Kelly 1.077 (v. Penn)
  • Mason Plumlee 0.958 (v. UNC-Greensboro)
*- players must play at least 5 minutes or factor into the box score to be considered for per game E-ratings

Five Least Efficient Per Minute Performances

  • Josh Hairston -0.200 (v. Michigan St.)
  • Tyler Thornton -.143 (v. Tennessee)
  • Andre Dawkins -.143 (v. Temple)
  • Quinn Cook -.125 (v. Belmont)
  • Tyler Thornton -.125 (v. Ohio State)
*- players must play at least 5 minutes or factor into the box score to be considered for per game E-ratings

Cumulative Season ratings for the Blue Devils. (E/game)*
  • Mason Plumlee +356 (17.8)
  • Ryan Kelly +292 (14.6)
  • Miles Plumlee +233 (11.7)
  • Seth Curry +225 (11.3)
  • Austin Rivers +199 (9.9)
  • Andre Dawkins +160 (8.0)
  • Quinn Cook +114 (8.1)
  • Tyler Thornton +113 (5.7)
  • Josh Hairston +49 (4.5)
  • Michael Gbinije +35 (3.9)
*- players must play at least 3 minutes or factor into the box score to be considered for per game E-ratings. (Gbinije 9, Hairston 11, Cook 14)

Cumulative Per Minute Season ratings for the Blue Devils. (Eseason/SeasonMinutes)*

  • Miles Plumlee 0.631
  • Mason Plumlee 0.620
  • Ryan Kelly 0.577
  • Quinn Cook 0.485
  • Seth Curry 0.381
  • Josh Hairston 0.360
  • Michael Gbinije 0.343
  • Austin Rivers 0.326
  • Andre Dawkins 0.324
  • Tyler Thornton 0.301


Tracking the most and least efficient performances by player
  • Austin Rivers +21 / -3
  • Seth Curry +28 / 0
  • Andre Dawkins +26 / -2
  • Mason Plumlee +35 / +7
  • Miles Plumlee +26 / +1
  • Ryan Kelly +30 / +1
  • Josh Hairston +13 / -1
  • Tyler Thornton +16 / -2
  • Quinn Cook +27 / -1
  • Michael Gbinije +11 / 0

Notes: Mason Plumlee's night and season continues to be the highlight of these ratings, but it's also interesting to note that Duke's most efficient players all play in the post in some capacity. A season ago Duke was led by Kyrie Irving, Kyle Singer, and Nolan Smith both on the court and in these rankings. This year Duke's strength is certainly on the interior. In the season rankings, Miles Plumlee is the most efficient player per minute, and has jumped over Seth Curry into third place in total scoring for the year.

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