Efficiency Ratings: Virginia Tech

As the Blue Devils progress through the season there will be many different theories on how to measure team success. TDD has adopted the NBA Efficiency Formula to track Duke's top players and performances after each game and throughout 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.

The emotions of senior night were enough to provide a close game throughout the first half as the Hokies found driving lanes and kick outs for open looks routinely. Midway through the opening half, Virginia Tech lead by as many as seven before Duke rallied. After halftime, however, the Blue Devils settled in, improved their performance on the defensive end and on the the glass to pull away. Duke out-scored their guests by 25 after halftime to send the senior trio of Curry, Plumlee, and Kelly out with a decided bang.

v. Virginia Tech
(change from previous game)

Notes: Kelly had yet another big game with 20 points, nine rebounds, and five assists in 31 minutes. Were it not for some fatigue (he says he's still rounding into shape), the senior forward could have ended up as the team leader in all three categories. For his efforts, Kelly posted a +26, which up until last weekend would have been one of the top 10 performances of the season in these ratings, but after Kelly's performance against Miami, Tuesday night's game was good enough for 11th.

Classmates Plumlee and Curry were also the stars of the evening. Plumlee's efficiency scores are down from where they've been most of the season due to a dip in scoring and rebounding, but he still posted a +19. Meanwhile, Curry overcame a slow start to hit a +21 thanks to a season high five rebounds to go with 20 points.

Interestingly enough, Plumlee and Kelly combined for 10 assists on the night, while the Duke guards combined for just six. Though Quinn Cook made up for the lack of assists by putting in work on the glass (six rebounds), and scoring 14 points while shooting 60 percent from the field.

Freshman Rasheed Sulaimon's production has dropped off as the calendar has switched to March. Coach K mentioned after the game that it's not unexpected as freshmen usually hit a wall this late in the season.

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

Ten Most Efficient Performances

  • Mason Plumlee v. NC State (+36)
  • Quinn Cook v. Clemson (+36)
  • Mason Plumlee v. Wake Forest (+35)
  • Mason Plumlee v. Florida Gulf Coast (+34)
  • Mason Plumlee v. Minnesota (+34)
  • Mason Plumlee v. Ohio State (+31)
  • Mason Plumlee v. Santa Clara (+30)
  • Mason Plumlee v. Boston College (+29)
  • Mason Plumlee v. Georgia State (+29)
  • Mason Plumlee v. Virginia Tech (+28)

Five Least Efficient Performances*
  • Seth Curry v. Miami (-8)
  • Rasheed Sulaimon v. NC State (-6)
  • Tyler Thornton v. Miami (-3)
  • Seth Curry v. Ohio State (-2)
  • Alex Murphy v. Florida Gulf Coast (-1)
  • Josh Hairston v. Georgia State (-1)
*- players must play at least five 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: 670 (22.3)
  • Quinn Cook: 399 (15.0)
  • Seth Curry: 342 (13.2)
  • Rasheed Sulaimon: 322 (10.7)
  • Ryan Kelly: 308 (18.1)
  • Tyler Thornton: 185 (6.2)
  • Amile Jefferson: 178 (6.4)
  • Josh Hairston: 100 (3.4)
  • Alex Murphy: 58 (2.1)
  • Marshall Plumlee: +1 (0.1)

Cumulative Season ratings per minute for the Blue Devils. (E/minutes)

  • Mason Plumlee: 0.645
  • Ryan Kelly: 0.632
  • Amile Jefferson: 0.466
  • Quinn Cook: 0.451
  • Seth Curry: 0.431
  • Rasheed Sulaimon: 0.363
  • Alex Murphy: 0.307
  • Tyler Thornton: 0.284
  • Josh Hairston: 0.261
  • Marshall Plumlee: +0.021

Tracking the most and least efficient performances by player

  • Mason Plumlee: 36/0
  • Quinn Cook: 36/3
  • Tyler Thornton: 16/-3
  • Rasheed Sulaimon: 26/-6
  • Ryan Kelly: 39/10
  • Seth Curry: 26/-8
  • Amile Jefferson: 16/0
  • Alex Murphy: 13/-1
  • Josh Hairston: 12/-1
  • Marshall Plumlee: 2/-1

Notes: Kelly has added 65 points to his season total over the last two games. The result has been a huge jump in total score, per minute, and per game tallies. The senior now sits just 14 points back of freshman Sulaimon, and is closing in on Mason Plumlee for top honors per minute.

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