Efficiency Ratings: China Game 2

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.

A second game playing by International rules took its toll on the Blue Devils as the team seemed to play through some obvious fatigue and sloppiness. The Blue Devils still managed a double-figure victory but the rotation was severely reduced from the first night's action and fewer players recorded positive efficiency scores. Duke was supported by a strong inside game that saw the starting frontline of Miles Plumlee and Ryan Kelly combine for 34 points and 17 rebounds on 15-of-19 shooting as Duke extended a six point half time lead into a second consecutive double-figure win.

v. China
(change from previous game)

Notes: In the second game against a familiar opponent the Blue Devils substantially reduced the rotation, choosing to play the more experienced players along with Austin Rivers for a majority of the night. The result was a compilation of relatively 'inefficient' games from many of non-rotational players from a season ago. Specifically, Murphy, Thornton, Hairston, and Gbinije registered 1 efficiency point or less. And freshman big man Marshall Plumlee didn't take off the warm-ups. The perimeter players scored less highly on Thursday with Rivers netting just a +1 rating. Much of the freshman's problems can be traced to his assist to turnover ration (1-to-7) along with his somewhat cold shooting night (5-of-16). The seven turnovers negated a strong night on the boards (6). Similarly, Seth Curry continued to struggle from the field (6-of-17) for the second straight game (he's now 10-of-32 on the trip) but did manage to post an otherwise balanced stat line that included three rebounds, three assists, and two steals. With the perimeter game slowing down a bit, Duke got another big game inside from Miles Plumlee and Ryan Kelly who combined for a +48 rating inside. Add in the contributions of Mason Plumlee (+8) and Duke posted the strongest front court rating of any game in the last two years.

Note: As more games are played we'll add in additional tracking/analysis.
Cumulative Pre-Season ratings for the Blue Devils. (E/game)*
  • Austin Rivers +17 (8.5)
  • Seth Curry +10 (5.0)
  • Andre Dawkins +33 (16.5)
  • Mason Plumlee +18 (9.0)
  • Miles Plumlee +31 (+11)
  • Marshall Plumlee 3 (3.0)
  • Alex Murphy +4 (2.0)
  • Ryan Kelly +54 (27.0)
  • Josh Hairston +5 (2.5)
  • Tyler Thornton +7 (3.5)
  • Michael Gbinije -4 (-2.0)
*- players must play at least 3 minutes or factor into the box score to be considered for per game E-ratings. Marshall Plumlee (E/1)

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