Efficiency Ratings: Georgia Tech

As the Blue Devils progress through the season there will be many different theories on how to measure team success. TDD has adopted an 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

Latest Game:

Grayson Allen scored 27 points and Duke dominated much of the second half, pulling away for an 80-71 victory over Georgia Tech with associate head coach Jeff Capel running things on the sideline.

Mike Krzyzewski did not travel to Atlanta, becoming ill after the team meal Monday evening. The winningest coach in NCAA Division I history was evaluated at the university hospital and advised by doctors to remain at home, marking the first time since 1995 that he missed a Blue Devils game.

It looked like the skid might continue when Georgia Tech (12-10, 2-7) shot 58 percent in the first half, going to the break with a 40-36 lead and doing pretty much whatever it wanted offensively.

But the Blue Devils clamped down in the second half, switching from a zone to a clingy man-to-man that limited the Yellow Jackets to just 13 of 42 (31 percent) from the field. Duke led by as many as 17 points before Georgia Tech rallied in the closing minutes.


(change from previous game)

  • Grayson Allen +28 (+20)
  • Matt Jones +8 (+3)
  • Brandon Ingram +15 (-8)
  • Amile Jefferson +DNP (-)
  • Marshall Plumlee +19 (+7)
  • Luke Kennard +8 (-3)
  • Derryck Thornton +15 (+10)
  • Chase Jeter +3 (+4)
  • Antonio Vrankovic -1 (-1)
  • Sean Obi DNP (-)

Notes: Allen once again carried Duke - especially in the second half. The sophomore shot well from the floor and kept a positive assist to turnover ratio that allowed his score to rise. In addition to his game high 27 points, Allen also really helped his team on the boards, logging seven rebounds.

Making his first start in a few weeks, point guard Derryck Thornton had an efficient night scoring (15 points on 7-of-11 FGs), and handed out three assists (against two turnovers). It’s the kind of performance the Blue Devils need from their young point guard as we enter the last two seven weeks (or so) of the season.

How does a player take 15 shots, missing 12, and still post a respectable +15? Well, Brandon Ingram did, as his associate head coach said in the post game, “a lot” all over the court. Though he couldn’t shoot against the Yellow Jackets, Ingram was able to rebound (10), knock down his free throws (7-of-8 for a 60 percent FT shooter), and play defense (4 blocks). The positive numbers in several other columns help off the 12 missed FGAs.


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

Ten Most Efficient Performances

  • Grayson Allen v. Georgetown (+38)
  • Brandon Ingram v. Georgia Southern (+38)
  • Brandon Ingram v. Elon (+35)
  • Grayson Allen v. NC State (+35)
  • Grayson Allen v. Long Beach State (+34)
  • Marshall Plumlee v. Syracuse (+33)
  • Marshall Plumlee v. Virginia Tech (+31)
  • Grayson Allen v. VCU (+30)
  • Luke Kennard v. Notre Dame (+30)
  • Grayson Allen v. Wake Forest (+29)
  • Grayson Allen v. Siena (+28)
  • Marshall Plumlee v. Wake Forest (+28)

Five Least Efficient Performances

  • Derryck Thornton (-5) v. Utah State
  • Grayson Allen (-4) v. Kentucky
  • Grayson Allen (-4) v. Utah
  • Chase Jeter (-3) v. Utah
  • Luke Kennard (-3) v. Syracuse


Cumulative Season ratings for the Blue Devils. (E/game)*

  • Grayson Allen +455 (20.7)
  • Brandon Ingram +404 (18.4)
  • Marshall Plumlee +350 (15.9)
  • Luke Kennard +255 (11.6)
  • Matt Jones +244 (11.1)
  • Amile Jefferson +177 (19.7)
  • Derryck Thornton +165 (7.5)
  • Chase Jeter +39 (2.2)
  • Antonio Vrankovic +10 (2.0)
  • Sean Obi 6 (0.7)



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

  • Antonio Vrankovic .714
  • Amile Jefferson .648
  • Grayson Allen .595
  • Brandon Ingram .563
  • Marshall Plumlee .544
  • Luke Kennard .468
  • Matt Jones .330
  • Derryck Thornton .296
  • Sean Obi .286
  • Chase Jeter .281


Tracking the most and least efficient performances by player

  • Grayson Allen 38/-4
  • Amile Jefferson 26/21
  • Brandon Ingram 38/-2
  • Matt Jones 25/0
  • Marshall Plumlee 33/4
  • Luke Kennard 30/-3
  • Chase Jeter 12/-3
  • Antonio Vrankovic 8/1
  • Derryck Thornton 20/-5
  • Sean Obi 3/0


- Thornton’s game against Georgia Tech bumped him past Jeter and Obi in the per minute ratings.

- Ingram has planted himself squarely in the second poll position for cumulative scoring. He’s 51 points shy of first place, and 50 points clear of third (Plumlee).

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