NBC Sports’ ProBasketballTalk (PBT) must be quite bored, as they only have news about the lockout and the National Basketball Association (NBA) season potentially being cancelled to really talk about. That said, they did post an interesting article today about the concept of win efficiency in professional sports. The question they were asking, was whether NBA franchises had the best win efficiency, as determined by the number of wins generated by a teams payroll. The calculation which they pull from a Bloomberg Business Week article is calculated by:
After calculating that “cost per win” number for each team across all four major sports over the last five years, Boudway found the standard deviation for each team within their respective sports. Using that standard deviation — dubbed “Efficiency Index” for the purposes of that particular post — Boudway was able to compare across leagues, and determine the spenders who are getting the greatest payoff per dollar spent relative to their competition.
You can click on this link to see the numbers. One thing I had a question about was the differences in the number of games played. Win efficiency is an interesting thing, as I have noted in previous posts about the Tampa Bay Rays, Oakland A’s, and the book Moneyball, there are some teams which are able to win games with lower payrolls. I decided to play around with the Bloomberg numbers, and normalize them for the differing number of games played by each team. This produced quite different values than the Bloomberg report. In fact, it went from having a mix of teams from different leagues at the top, to having mainly NFL teams. In this, when I corrected for the differences in number of games played, it displays that the NFL is clearer the most efficient at the top. The problem is of course one of sample size. The NFL has such a small number of games in a season compared to the other leagues, that it is hard to be able to truly compare a single season of NFL teams (who play 16 games) against MLB teams (who play 162). Additionally, we have to take into account that the leagues have different structures in regards to salary cap rules (MLB has no salary cap, the rest do). This thus creates the case where some teams are probably forced to be efficient because they don’t spend much, and because of low number of games for NFL teams, means they are able to seem to be very efficient. I’m not going to say that the teams at the top of this list are better at money management, or have much more effective management, because those kinds of generalizations are hard to make when we are talking about leagues with different structures.
My numbers (sorry for the length). First column is their rank, second is their rank in the Bloomberg rankings.
- 4 New England Patriots -0.3375
- 7 Indianapolis Colts -0.3
- 12 San Diego Chargers -0.27
- 20 Baltimore Ravens -0.215
- 27 Pittsburgh Steelers -0.1925
- 28 Green Bay Packers -0.19
- 30 Atlanta Falcons -0.185
- 1 Nashville Predators -0.184420649
- 33 Philadelphia Eagles -0.175
- 37 New York Giants -0.1575
- 41 Chicago Bears -0.1425
- 42 Tennessee Titans -0.1425
- 5 San Antonio Spurs -0.136935092
- 6 San Jose Sharks -0.135830777
- 44 New Orleans Saints -0.135
- 10 New York Islanders -0.126996255
- 2 Florida Marlins -0.126493546
- 11 Atlanta Thrashers -0.120370363
- 3 Tampa Bay Rays -0.115494108
- 13 Phoenix Coyotes -0.111535841
- 14 Utah Jazz -0.110431526
- 15 Los Angeles Lakers -0.108222896
- 16 Pittsburgh Penguins -0.10711858
- 49 Tampa Bay Buccaneers -0.105
- 17 Orlando Magic -0.100492689
- 19 St. Louis Blues -0.099388373
- 21 Denver Nuggets -0.093866797
- 8 Pittsburgh Pirates -0.09349523
- 9 San Diego Padres -0.092709556
- 52 Dallas Cowboys -0.0925
- 53 New York Jets -0.0925
- 22 Chicago Bulls -0.091658167
- 23 New Orleans Hornets -0.091658167
- 54 Jacksonville Jaguars -0.0875
- 24 Detroit Red Wings -0.08613659
- 26 Boston Celtics -0.085032275
- 32 Phoenix Suns -0.080615014
- 18 Arizona Diamondbacks -0.071496352
- 35 Dallas Mavericks -0.070676177
- 36 Portland Trail Blazers -0.070676177
- 38 Carolina Hurricanes -0.069571861
- 39 Atlanta Hawks -0.069571861
- 43 Houston Rockets -0.061841655
- 25 Oakland Athletics -0.061282588
- 29 Washington Nationals -0.058925565
- 31 Texas Rangers -0.057354217
- 46 Anaheim Ducks -0.053007133
- 34 Cleveland Indians -0.051854497
- 47 Buffalo Sabres -0.050798502
- 63 Denver Broncos -0.0475
- 40 Kansas City Royals -0.046354778
- 45 Colorado Rockies -0.040855058
- 55 Minnesota Wild -0.036442404
- 48 Cincinnati Reds -0.035355339
- 50 Milwaukee Brewers -0.032998316
- 51 Toronto Blue Jays -0.032212642
- 68 Minnesota Vikings -0.03
- 57 Dallas Stars -0.028712197
- 58 Washington Capitals -0.027607882
- 59 New Jersey Devils -0.027607882
- 60 Vancouver Canucks -0.02319062
- 61 Cleveland Cavaliers -0.022086305
- 56 Minnesota Twins -0.021998878
- 62 Detroit Pistons -0.02098199
- 64 Oklahoma City Thunder -0.017669044
- 65 Chicago Blackhawks -0.016564729
- 66 Charlotte Bobcats -0.015460414
- 67 Miami Heat -0.014356098
- 69 Philadelphia 76ers -0.011043153
- 70 Florida Panthers -0.011043153
- 71 Arizona Cardinals -0.01
- 72 Carolina Panthers -0.01
- 73 Atlanta Braves 0
- 74 St. Louis Cardinals 0.005499719
- 79 San Francisco Giants 0.012570787
- 77 Los Angeles Kings 0.014356098
- 81 Baltimore Orioles 0.020427529
- 75 Houston Texans 0.0275
- 76 Kansas City Chiefs 0.0275
- 86 Houston Astros 0.029069945
- 91 Los Angeles Dodgers 0.036141013
- 78 Seattle Seahawks 0.0375
- 82 Boston Bruins 0.037546719
- 83 Golden State Warriors 0.037546719
- 84 Los Angeles Clippers 0.038651034
- 85 Colorado Avalanche 0.040859665
- 87 Indiana Pacers 0.043068295
- 88 Toronto Raptors 0.043068295
- 89 Montreal Canadiens 0.043068295
- 95 Los Angeles Angels 0.043997755
- 98 Philadelphia Phillies 0.0487118
- 80 Cincinnati Bengals 0.0525
- 93 Columbus Blue Jackets 0.053007133
- 94 Tampa Bay Lightning 0.058528709
- 99 Detroit Tigers 0.061282588
- 96 Milwaukee Bucks 0.06294597
- 100 Seattle Mariners 0.06363961
- 101 Chicago White Sox 0.064425285
- 102 Washington Wizards 0.091658167
- 103 Memphis Grizzlies 0.097179743
- 109 Chicago Cubs 0.097423601
- 104 Sacramento Kings 0.103805635
- 111 Boston Red Sox 0.104494669
- 90 San Francisco 49ers 0.11
- 105 Ottawa Senators 0.110431526
- 92 Buffalo Bills 0.115
- 113 New York Mets 0.120993827
- 108 New Jersey Nets 0.129204886
- 110 Calgary Flames 0.143560984
- 97 Miami Dolphins 0.1475
- 112 Toronto Maple Leafs 0.152395506
- 114 New York Rangers 0.200985377
- 116 Philadelphia Flyers 0.228593259
- 121 New York Yankees 0.228631193
- 117 Edmonton Oilers 0.234114835
- 106 Cleveland Browns 0.255
- 107 Washington Redskins 0.2675
- 119 Minnesota Timberwolves 0.312521219
- 120 New York Knicks 0.314729849
- 115 Oakland Raiders 0.4825
- 118 St. Louis Rams 0.585
- 122 Detroit Lions 0.805
You will notice that in both rankings the Detroit Lions are dead last. When you lose most of your games, you just can’t be considered to be very efficient unless you are paying your players close to nothing. While adjusting for the number of games changes things a bit, there is still a 0.95 correlation between Bloomberg’s rankings and my adjusted ones.