Efficiency Ratings: Robert Morris

Using an 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

Latest Game:

Quinn Cook scored 22 points to help the No. 1-seeded Blue Devils get off to a torrid start and beat Robert Morris 85-56 on Friday.

Jahlil Okafor added 21 as the Blue Devils (30-4) wasted little time getting their offense revving, hitting their first seven shots and 12 of 15. Duke led by double figures from there, with the night mostly about learning how to play in March for a team with four freshmen among its eight scholarship players.

Duke was in command from there for a routine 1-vs-16 finish, shooting 63 percent in the program's 100th NCAA Tournament victory.

Duke will play the St. John's-San Diego State winner on Sunday in the round of 32. The Blue Devils are a No. 1 seed for the 11th time in 18 seasons, but first since 2011.

More importantly, Duke got off to a good start in the tournament after a pair of shocking one-and-done exits in the previous three seasons, both in its home state of North Carolina. Last year, the Blue Devils lost to No. 14 seed Mercer in Raleigh, roughly 30 minutes from Duke's campus.


vs. ROBERT MORRIS

(change from previous game)
  • Jahlil Okafor +21 (-6)
  • Justise Winslow +20 (-1)
  • Tyus Jones +18 (+11)
  • Quinn Cook +29 (+29)
  • Amile Jefferson +14 (+8)
  • Grayson Allen -3 (-4)
  • Matt Jones +6 (+4)
  • Marshall Plumlee +18 (+15)



Notes: Cook posted his best score of the season by knocking down 67 percent of his field goals on the way to scoring 22 points and handing out five assists. He also added three steals which bumped his score to a +29. Meanwhile, Tyus Jones scored a +18 thanks to a 7 to 1 assist to turnover ratio along with 10 points on four of seven from the field.

Marshall Plumlee’s double-double was the first of his career, but his 0-for-1 from the free throw line resulted in the junior big man failing to tie his career high in efficiency. He finished with a +18 - one short of his +19 against NC State in the ACC quarterfinal round.

Despite his somewhat slow start to the game, Justise Winslow’s pursuit of a triple-double landed him with a +20 rating. The freshman wing scored just six points on 2-of-4 shooting, but he overcame the low point total by added 11 rebounds and seven assists.


MEMORABLE SEASON PERFORMANCES

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

Ten Most Efficient Performances

  • Jahlil Okafor v. Elon (+37)
  • Tyus Jones v. North Carolina (+34)
  • Jahlil Okafor v. NC State (+33)
  • Jahlil Okafor v. Furman (+32)
  • Jahlil Okafor v. Boston College (+32)
  • Jahlil Okafor v. Virginia Tech (+30)
  • Amile Jefferson v. Furman (+30)
  • Jahlil Okafor v. Wofford (+30)
  • Justise Winslow v. Syracuse (+29)
  • Quinn Cook v. Robert Morris (+29)

Five Least Efficient Performances*

  • Justise Winslow (-5) v. Miami
  • Rasheed Sulaimon (-4) v. Temple
  • Grayson Allen (-3) v. Boston College
  • Grayson Allen (-3) v. Robert Morris
  • Matt Jones (-2) v. Elon


SEASON EFFICIENCY RATING

Cumulative Season ratings for the Blue Devils. (E/game)*
  • Jahlil Okafor +704 (21.3)*
  • Tyus Jones +521 (15.3)
  • Quinn Cook +517 (15.2)
  • Justise Winslow +490 (14.4)
  • Amile Jefferson +377 (11.1)
  • Matt Jones +203 (6.0)
  • Marshall Plumlee +183 (5.4)
  • Grayson Allen +105 (3.5)*


*- Games Factored In: Allen (30); Okafor (33)

MOST EFFICIENT PER MINUTE

Cumulative Season ratings per minute for the Blue Devils. (E/minutes)
  • Jahlil Okafor: 0.706
  • Marshall Plumlee: 0.545
  • Justise Winslow: 0.505
  • Amile Jefferson: 0.503
  • Tyus Jones: 0.460
  • Quinn Cook: 0.427
  • Grayson Allen: 0.399
  • Matt Jones: 0.285


SEASON HIGH/LOW PERFORMANCES


Tracking the most and least efficient performances by player
  • Jahlil Okafor 37 / 7
  • Amile Jefferson 30 / -1
  • Quinn Cook 29 / 0
  • Tyus Jones 34 / 1
  • Grayson Allen 28 / -3
  • Justise Winslow 29 / -5
  • Marshall Plumlee 19 / 0
  • Matt Jones 17 / -2


Notes:

- Cook closes back to within striking distance of Jones for second place, slicing the freshman’s lead in the cumulative total to just four. While Winslow is just 27 points short of Cook for third place.

- Winslow’s all around game and scoring run over the last month has taken him from the bottom three in per minute efficiency to third on the team.

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