How did I do handicapping this NBA prop?

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  • scdavis0
    SBR Rookie
    • 01-28-09
    • 37

    #1
    How did I do handicapping this NBA prop?
    The prop in question is Deron Williams o/u 29.5 pts+asts for tonight's game at Orlando. I used a derivative of the game spread/total and Poisson. Deron scores very nearly 2 points per score (ie breaking down 3 pointers, 2 pointers, and a pair of free throws). He also gets very nearly 1 assist per score. He's averaging about 20 points per game, ie 10 scores per game, and about 10 assists per game. The 29.5 line could be modified to be something around 19.5 scores+asts, which is right at his averages for this year.

    The Jazz are averaging just over 104 ppg this season, and Deron is about 3 ppg above his career average. In tonight's game the Jazz have a median expected point total of only about 91.5 points (11.5 pt dogs/194.5 total). I feel that at the very least his score expectation could be scaled down from 10 scores to 10*(91.5/104) = 8.8 scores. The assists would probably be scaled down a bit too. But let's be conservative and say 18.8 scores + asts vs an over/under 19.5.

    The Poisson calculator gives us about -137 as a fair line for 18.8 expectation vs a line of 19.5. I bet this at -115 at a local book that I use that copies greek prop lines. Since then the line moved against me to -140/+110. So I bet it again. Am I missing something here or do I have a good bet?
  • JustinBieber
    SBR Sharp
    • 05-16-10
    • 324

    #2
    Your calculations are most likely correct, I wouldn't care if a prop line moved against me.
    Comment
    • That Foreign Guy
      SBR Sharp
      • 07-18-10
      • 432

      #3
      Most props unless something fundamental changed (spread, total, player news) I'm more consider increasing my exposure if the line moves against me than sweating it.

      Your analysis seems solid.
      Comment
      • SparJMU
        SBR MVP
        • 02-18-10
        • 1648

        #4
        Is handicapping a prop really that simple? Shouldn't you have researched the individual matchups and Deron Williams historical performance against Orlando? Shouldn't the total handicapped number change drastically depending on whether Williams is being covered by a strong defender like Rajon Rondo versus an undersized defender like Jameer Nelson?
        Comment
        • JustinBieber
          SBR Sharp
          • 05-16-10
          • 324

          #5
          No because prop lines are horrendous.
          Comment
          • SparJMU
            SBR MVP
            • 02-18-10
            • 1648

            #6
            In all seriousness, should handicapping the prop be 100% statistical the way scdavis did it? Or should there be many other factors that come into play?
            Comment
            • Flight
              Restricted User
              • 01-28-09
              • 1979

              #7
              Use as many factors as you want. The more information you use the better your estimate of the line will be.

              Personally I only use a few factors and just look for props that are off by a large amount. If a quick analysis tells you something should be -200 and it is offered at -115, do you really need to add more factors?
              Comment
              • Poogs
                SBR High Roller
                • 04-05-10
                • 116

                #8
                Can you use poisson for points in an nba game? I thought poisson was only good for stats that increase one ata a time?
                Comment
                • JustinBieber
                  SBR Sharp
                  • 05-16-10
                  • 324

                  #9
                  No you can't use poisson for points. But in the case of things like player assists+points where lines will be horrible if you normalise 2pt, 3pt and FT's for the player then you can use it in a poisson.

                  The results wont be 100% accurate of course but it should be good enough to beat a line which has had roughly about 1 minutes thought gone into it with a $200 maximum or w/e it is.
                  Comment
                  • Poogs
                    SBR High Roller
                    • 04-05-10
                    • 116

                    #10
                    On the same subject, can anyone help and see if I did this correctly?

                    Figuring the odds of a todd heap touchdown last night:

                    This year hes played in 8 games and has scored 3 TD's. So 3/8 = .375 times baltimores team total according to pinny 21 divided by their avg points per game of 21.9 equals .3595

                    Putting that into the poisson calculator with the Proposition at .5 I get a moneyline of +-231.

                    Is that correct? Im confident I have the formula right, but is using only 8 games ok? Last year he scored 8 td's in 16 games, so it seems like he is on pace. Is it ok to not look into atlantas pass defense? I figured any abnormality would be reflected in the team total. Thanks for any input.
                    Comment
                    • Shonner
                      SBR MVP
                      • 09-05-10
                      • 1361

                      #11
                      Originally posted by Poogs
                      On the same subject, can anyone help and see if I did this correctly?

                      Figuring the odds of a todd heap touchdown last night:

                      This year hes played in 8 games and has scored 3 TD's. So 3/8 = .375 times baltimores team total according to pinny 21 divided by their avg points per game of 21.9 equals .3595

                      Putting that into the poisson calculator with the Proposition at .5 I get a moneyline of +-231.

                      Is that correct? Im confident I have the formula right, but is using only 8 games ok? Last year he scored 8 td's in 16 games, so it seems like he is on pace. Is it ok to not look into atlantas pass defense? I figured any abnormality would be reflected in the team total. Thanks for any input.
                      I don't care what anyone says about this, players are more likely to score against certain defenses, certain conditions (turf/grass), there is much more that goes into capping than a simple conclusion like you reached.

                      do you know what type of defense he is playing against? do they let up td's against TE's? are they better in run or pass defense?

                      capping is much more difficult than your calculation
                      Comment
                      • JustinBieber
                        SBR Sharp
                        • 05-16-10
                        • 324

                        #12
                        I think his idea here is to make money though, not sift through vast amounts of data to find random variations.
                        Comment
                        • Shonner
                          SBR MVP
                          • 09-05-10
                          • 1361

                          #13
                          Originally posted by JustinBieber
                          I think his idea here is to make money though, not sift through vast amounts of data to find random variations.
                          I'm not gonna comment on this. Just don't say anything anymore.
                          Comment
                          • JustinBieber
                            SBR Sharp
                            • 05-16-10
                            • 324

                            #14
                            Looks like a comment to me. I assume you know if im writing it from turf or grass though.
                            Comment
                            • Indecent
                              SBR Wise Guy
                              • 09-08-09
                              • 758

                              #15
                              Originally posted by Shonner
                              I don't care what anyone says about this, players are more likely to score against certain defenses, certain conditions (turf/grass), there is much more that goes into capping than a simple conclusion like you reached.

                              do you know what type of defense he is playing against? do they let up td's against TE's? are they better in run or pass defense?

                              capping is much more difficult than your calculation
                              Have you actually made money betting props, or are you speaking in theoretical terms.

                              How many props can you price a day? Does it justify spending so much time with low limits?
                              Comment
                              • Shonner
                                SBR MVP
                                • 09-05-10
                                • 1361

                                #16
                                Originally posted by JustinBieber
                                Looks like a comment to me. I assume you know if im writing it from turf or grass though.
                                you clearly know nothing about handicapping nfl, that's def. a factor. more pts scored on turf. look up the #"s if you don't believe me.

                                oh wait, who cares, ur here to win money, not crunch #'s, even tho u r in a handicapping forum
                                Comment
                                • JustinBieber
                                  SBR Sharp
                                  • 05-16-10
                                  • 324

                                  #17
                                  You're right I don't know anything about handicapping at all.
                                  Comment
                                  • Shonner
                                    SBR MVP
                                    • 09-05-10
                                    • 1361

                                    #18
                                    Originally posted by Indecent
                                    Have you actually made money betting props, or are you speaking in theoretical terms.

                                    How many props can you price a day? Does it justify spending so much time with low limits?
                                    There is huge juice with props, if you are going to bet them, you have to do it right.

                                    I don't bet them often.

                                    I tell you what - why don't you ask Justin7 about your philosophy that you can just use a few simple variables to draw a conclusion that a play is +EV.

                                    The question of the thread was asking if the prop was properly handicapped - regardless of how much time it would take - the answer is simply NO, it wasn't.

                                    This isn't rocket science.

                                    But yeah, seek Justin's opinion, he's big on props, and see what he says. Something tells me he's not running a few simple #'s that can be calculated in less than a minute and throwing a lot of money on it
                                    Comment
                                    • sharpcat
                                      Restricted User
                                      • 12-19-09
                                      • 4516

                                      #19
                                      Originally posted by Shonner
                                      There is huge juice with props, if you are going to bet them, you have to do it right.

                                      I don't bet them often.

                                      I tell you what - why don't you ask Justin7 about your philosophy that you can just use a few simple variables to draw a conclusion that a play is +EV.

                                      The question of the thread was asking if the prop was properly handicapped - regardless of how much time it would take - the answer is simply NO, it wasn't.

                                      This isn't rocket science.

                                      But yeah, seek Justin's opinion, he's big on props, and see what he says. Something tells me he's not running a few simple #'s that can be calculated in less than a minute and throwing a lot of money on it
                                      Actually if you read Justins book, these are a few of the techniques that he suggested in his prop betting section where he also suggested that this is the best place for an aspiring pro with a small bankroll to start out.

                                      I blame Justins book for the recent flood of prop betting threads which have been started here in the last 2 months.
                                      Comment
                                      • JustinBieber
                                        SBR Sharp
                                        • 05-16-10
                                        • 324

                                        #20
                                        lol selfowned
                                        Comment
                                        • RickySteve
                                          Restricted User
                                          • 01-31-06
                                          • 3415

                                          #21
                                          Betting props is a great way to get thrown out of books before you make any real money.
                                          Comment
                                          • GELATINOUS CUBE
                                            SBR MVP
                                            • 08-09-09
                                            • 4534

                                            #22
                                            Did you bet the under??

                                            That's how you should have bet that?

                                            Ps.. I dunno if it won.. Did it win?
                                            blog '09-'10: 37-16: +$31,900
                                            mlb 2010; 16-12: +$4,540
                                            gellyhoops 2010: 10-6 +$3,150
                                            overall: 63-34 +$40,290
                                            Comment
                                            • GELATINOUS CUBE
                                              SBR MVP
                                              • 08-09-09
                                              • 4534

                                              #23
                                              Actually ricky, betting props will get you walking out of a book broke b4 they throw you out, because they are always -115/-115 at best.
                                              blog '09-'10: 37-16: +$31,900
                                              mlb 2010; 16-12: +$4,540
                                              gellyhoops 2010: 10-6 +$3,150
                                              overall: 63-34 +$40,290
                                              Comment
                                              • varolopez
                                                SBR Rookie
                                                • 11-04-10
                                                • 12

                                                #24
                                                Did anybody tried this calculations?
                                                Comment
                                                • JustinBieber
                                                  SBR Sharp
                                                  • 05-16-10
                                                  • 324

                                                  #25
                                                  Originally posted by GELATINOUS CUBE
                                                  Actually ricky, betting props will get you walking out of a book broke b4 they throw you out, because they are always -115/-115 at best.
                                                  And when I thought misinformation couldn't get any worse in this thread
                                                  Comment
                                                  • newbee
                                                    SBR Rookie
                                                    • 12-05-08
                                                    • 30

                                                    #26
                                                    I second that statement
                                                    Comment
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