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Efficiency Ratings: North Carolina

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 29 points while Luke Kennard added 20 for the Blue Devils (22-9, 11-7), who have the No. 5 seed in the league tournament. They gave themselves a chance to win by hitting 13 3-pointers.

"That's what we do -- 3s and free throws are kind of how we have to score,'' coach Mike Krzyzewski said. "We've got to do what we have to do, and it's won 22 games, it's made us a very good and tough team."

Allen and Kennard hit them in the final 20 seconds, with Kennard's making it 72-70 with 9.3 seconds left.


vs.North Carolina

(change from previous game)

  • Grayson Allen +20 (-4)
  • Matt Jones +3 (-11)
  • Brandon Ingram +11 (-7)
  • Amile Jefferson +DNP (-)
  • Marshall Plumlee +12 (-9)
  • Luke Kennard +20 (+19)
  • Derryck Thornton +1 (-5)
  • Chase Jeter +0 (-)
  • Antonio Vrankovic DNP (-)
  • Sean Obi DNP (-)


Notes: Allen and Kennard both scored well in the final regular season game. Allen’s +20 was held from being higher due to 17 missed field goals, however. Kennard hit 6-of-13 from the field and pulled in three rebounds and handed out two assists. Allen added five assists and two steals to go with four rebounds.

Duke got only a +11 from Ingram who struggled again from the field (3-of-12), but did manage to rebound well (8) and finished with 10 points in what was - most likely - his final game in Cameron.

Senior Marshall Plumlee would have had a much higher score, but his 1-of-5 performance at the free throw line sank his otherwise solid line which included nine rebounds.


MEMORABLE SEASON PERFORMANCES

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
  • Brandon Ingram (-3) v. Louisville
  • Luke Kennard (-3) v. Syracuse

SEASON EFFICIENCY RATING

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

  • Grayson Allen +633 (20.4)
  • Brandon Ingram +535 (17.3)
  • Marshall Plumlee +493 (15.9)
  • Luke Kennard +351 (11.3)
  • Matt Jones +306 (10.2)
  • Derryck Thornton +200 (6.5)
  • Amile Jefferson +177 (19.7)
  • Chase Jeter +58 (2.1)
  • Antonio Vrankovic +10 (2.0)
  • Sean Obi 6 (0.7)

MOST EFFICIENT PER MINUTE

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

  • Antonio Vrankovic .714
  • Amile Jefferson .648
  • Grayson Allen .568
  • Marshall Plumlee .517
  • Brandon Ingram .509
  • Luke Kennard .446
  • Matt Jones .314
  • Chase Jeter .284
  • Sean Obi .286
  • Derryck Thornton .243

SEASON HIGH/LOW PERFORMANCES


Tracking the most and least efficient performances by player

  • Grayson Allen 38/-4
  • Amile Jefferson 26/21
  • Brandon Ingram 38/-3
  • 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

Notes:

- With the regular season over, it’s interesting to note that no player produced a top 10 overall performance following Luke Kennard’s +30 against Note Dame in Cameron. Much of that is owed to the very tough ACC schedule and the general lack of depth. In the post Duke went to Sean Obi six times this year and Vrankovic appeared in 10 games.

- The improvement of Marshall Plumlee this season was incredible. The senior’s +493 score was more than 220 points higher than his first three season at Duke…combined. It should serve as a good bit of motivation and hope for Jeter who finished with just a +2.1/game rating in 27 appearances.

- Speaking of improvement, Derryck Thornton will need to continue to improve and put in work in the offseason. The freshman point guard was Duke’s least efficient player (per minute) this year.


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