Efficiency Ratings: Game 1

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.


LATEST GAME
For a while it looked as though things would roll along for Duke against Belmont. Leading by 16 early in the second half it appeared as though head coach Mike Krzyzewski's team was ready to deliver the knock-out blow. Instead the veteran Bruins battled back and took Duke down to the wire before a late three iced the game for the home team. Certainly, Belmont is a very solid opponent as Krzyzewski and company continually noted in the post game press conference, but this Duke team showed quite a bit of inexperience by failing to close out an opponent it had put on the ropes. Duke gets another chance to improve on Saturday afternoon hosting Presbyterian.

v. Belmont
(change from previous game)


Per minute Efficiency
  • Austin Rivers 0.211
  • Seth Curry 0.464
  • Andre Dawkins 0.000
  • Mason Plumlee 0.714
  • Miles Plumlee 0.235
  • Alex Murphy 0.00
  • Ryan Kelly 0.500
  • Josh Hairston 0.00
  • Tyler Thornton 0.583
  • Quinn Cook -0.125
  • Michael Gbinije 0.00

Notes: The most consistent and productive player on the floor was junior big forward Mason Plumlee who started the season with a double-double while also leading the team in assists. Plumlee shot the ball extremely well (6-10) and stayed out of foul trouble which allowed him to log 35 minutes. Meanwhile freshman Austin Rivers played under control in the first half, but things got tougher after halftime for the former HS Player of the Year. Rivers, at times, struggled with shot selection and putting himself in situations where the only possible result was a turnover or bad shot. Much of that was a freshman adjusting to a new level of play. Some of it, however, was a lack of movement off the ball as it appeared Duke was watching not only Rivers, but whomever had the ball go one on one. This lead to the overall stagnant and broken rhythm on the offensive end which plagued the Blue Devils down the stretch.

There's no need to look at the numbers to see that sophomore point guard Tyler Thornton provided a huge spark off the bench. Thornton's defense and overall scrappy effort will remind many fans of the style employed by Butler over the last two years. Unlike the exhibition games where Thornton's spark seemed incapable of being measured in individual statistics, against Belmont the DC area product posted his highest efficiency rating ever with a +14. He didn't' miss a shot from the field, recorded a pair of rebounds and assists, and swiped three crucial steals as Duke was on the ropes offensively. A couple of turnovers (dribbling off the foot and tripping on a 1 on 1 drive into the lane) were the two plays that kept him from approaching a +20.

Ryan Kelly provided a +14 by posting 12 points and six rebounds, while Andre Dawkins redeemed an otherwise inefficient showing by knocking down a game clinching three with 10 seconds remaining. That shot brought the junior guard's efficiency rating to an even +0.


MEMORABLE SEASON PERFORMANCES

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

Ten Most Efficient Performances

  • Mason Plumlee +25 (v. Belmont)
  • Tyler Thornton +14 (v. Belmont)
  • Ryan Kelly +14 (v. Belmont)

Five Least Efficient Performances*

  • Quinn Cook -1 (v. Belmont)
  • Andre Dawkins +0 (v. Belmont)
*- players must play at least 3 minutes or factor into the box score to be considered for per game E-ratings

Five Most Efficient Per Minute Performances

  • Mason Plumlee .714 (v. Belmont)
  • Tyler Thornton .583 (v. Belmont)
  • Ryan Kelly .500 (v. Belmont)
*- players must play at least 3 minutes or factor into the box score to be considered for per game E-ratings

Five Least Efficient Per Minute Performances

  • Quinn Cook -.125 (v. Belmont)
  • Andre Dawkins .000 (v. Belmont)
*- players must play at least 3 minutes or factor into the box score to be considered for per game E-ratings
SEASON EFFICIENCY RATING

Cumulative Season ratings for the Blue Devils. (E/game)*
  • Mason Plumlee +25 (25.0)
  • Ryan Kelly +14 (14.0)
  • Tyler Thornton +14 (14.0)
  • Seth Curry +13 (13.0)
  • Austin Rivers +8 (8.0)
  • Miles Plumlee +4 (4.0)
  • Andre Dawkins +0 (0.0)
  • Alex Murphy --
  • Josh Hairston --
  • Michael Gbinije +0 (--)
  • Quinn Cook -1 (-1.0)
*- players must play at least 3 minutes or factor into the box score to be considered for per game E-ratings. (Gbinije 0 games)

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

  • Mason Plumlee 0.714
  • Tyler Thornton 0.583
  • Ryan Kelly 0.500
  • Seth Curry 0.464
  • Miles Plumlee 0.235
  • Austin Rivers 0.211
  • Andre Dawkins 0.000
  • Alex Murphy 0.00
  • Josh Hairston 0.00
  • Michael Gbinije 0.00
  • Quinn Cook -0.125
*- players must play at least 3 minutes or factor into the box score to be considered for per game E-ratings. (Gbinije 0 games)
SEASON HIGH/LOW PERFORMANCES

Tracking the most and least efficient performances by player
  • Austin Rivers +8 /
  • Seth Curry +13 /
  • Andre Dawkins +0 /
  • Mason Plumlee +25 /
  • Miles Plumlee +4 /
  • Alex Murphy
  • Ryan Kelly +14 /
  • Josh Hairston
  • Tyler Thornton +14 /
  • Quinn Cook -1 /
  • Michael Gbinije


Notes: The Blue Devils beat a solid team in Belmont, but the offensive efficiency and overall flow is clearly a work in progress. Duke is still searching for roles on the offensive end of the floor. More specifically they are looking to mesh various abilities and figure out who is going to step up in crunch time. Also, who is willing to step up and be the 'go to' guy. Right now Austin Rivers appears willing, but the freshman will certainly have a learning curve (as evidenced by his very low E/min totals). The team does seem to have a very strong interior game with Mason Plumlee showing off a number of post moves and looking/demanding the ball, but he's going to need some help from his teammates in terms of delivering the basketball in a good position to score.

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