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  • Cumulative Spread Margin
    ("Contrarian Bridgejumping")

    Week One

    If you are unfamiliar with the "Contrarian Bridgejumping" handicapping method, we suggest you read the following first:

    As the name suggests, "Cumulative Spread Margin" involves totaling up how a team has performed in terms of net points against the lines on their games. For instance a team that won by eight while favored by three would accrue +5 points of CSM for the effort. On the other hand a team that lost by eight while favored by three would get a -11 CSM for that game.

    Similar to the Turnover Difference Theory (another contrarian indicator), the CSM angle suggests playing the team with the BAD Cumulative Spread Margin in match-ups with a significant difference, which is defined as 6+ CSM points per game.

    Example: if team A is averaging a -2 pt CSM and team B is +5 CSM per game so far, then team A would be the play based on being 7 CSM pts worse per game.

    While the method is focused on the week 5 to week 12 heart of the season, it seems logical that the angle might work fairly well for the first week of a season, given that the lousy teams from last year will probably be under-rated, while the good teams from last season may generally be over-rated. Here are the CSM results in week one games:

    Week 1 "Cumulative Spread Margin" results 1984-2005
    (using prior season's stats)
    Overlay
    6 - 7.9
    8+ Pts
    HomeFavs
    7 - 4
    1 - 0
    HomeDogs
    7 - 3
    9 - 3
    AwayFavs
    0 - 1
    0 - 0
    AwayDogs
    8 - 6
    8 - 6
    Favorites
    7 - 5
    1 - 0
    Underdogs
    15 - 9
    17 - 9
    Home Teams
    14 - 7
    10 - 3
    Away Teams
    8 - 7
    8 - 6
    ALL PICKS
    22 - 14
    18 - 9
    WIN %
    61 %
    67 %

    Spread Ranges for the 6+ Difference plays
    Spread Range
    10+ points
    5 to 9.5
    0 to 4.5
    Favorites
    0 - 0
    1 - 0
    7 - 5
    Underdogs
    4 - 3
    12 - 10
    15 - 6

    So it's a little impressive seeing the 6+ plays (the only ones that count) have compiled a 40-23 record from 1984-2005.

    Let's take a look then at the 2006 season matchups:

    Away
    CSM
    Away Team
    Line
    (Home)
    Home Team
    Home
    CSM
    Pick
    CSM Diff
    2.2
    Miami
    -1.5
    Pittsburgh
    4.0
    -1.8
    -1.4
    Atlanta
    -6
    Carolina
    3.9
    -5.3
    -1.0
    Baltimore
    -3
    Tampa Bay
    -.3
    -.7
    -3.4
    Buffalo
    -9
    New England
    -.5
    -2.9
    .8
    Cincinnati
    -2
    Kansas City
    4.0
    -3.2
    4.5
    Denver
    +3.5
    St. Louis
    -3.8
    St. Louis
    8.3
    -6.0
    New Orleans
    -3
    Cleveland
    -.5
    -5.5
    -2.6
    N.Y. Jets
    -2.5
    Tennessee
    -3.9
    1.3
    -4.9
    Philadelphia
    +4.5
    Houston
    -4.3
    -.6
    7.0
    Seattle
    +6.5
    Detroit
    -3.3
    Detroit
    10.3
    3.4
    Chicago
    +3.5
    Green Bay
    -.7
    4.1
    -.1
    Dallas
    -2.5
    Jacksonville
    2.8
    -2.9
    -2.1
    San Francisco
    -8
    Arizona
    -2.2
    .1
    3.3
    Indianapolis
    +3.5
    N.Y. Giants
    4.0
    -.7
    -1.5
    Minnesota
    -4.5
    Washington
    2.5
    -4.0
    3.3
    San Diego
    +3
    Oakland
    -3.1
    Oakland
    6.4

    ANALYSIS: Three underdogs are selected by the CSM method for the openers, based on the prior season performance against the spread: St. Louis +3.5, Detroit +6.5, and Oakland +3.


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