---
title: 'Why 99% of Sports Bettors Lose (Top-Down Betting Explained)'
source: 'https://youtube.com/watch?v=zrOdG2PR9uc'
video_id: 'zrOdG2PR9uc'
date: 2026-08-04
duration_sec: 737
---

# Why 99% of Sports Bettors Lose (Top-Down Betting Explained)

> Source: [Why 99% of Sports Bettors Lose (Top-Down Betting Explained)](https://youtube.com/watch?v=zrOdG2PR9uc)

## Summary

This video explains the difference between top-down and bottom-up sports betting approaches, arguing that a top-down approach, which leverages market inefficiencies rather than personal research, is more realistic and profitable for most bettors. The presenter demonstrates how to use the Odds Jam software to find positive expected value (EV) bets and explains the sharp money tool as a hybrid strategy.

### Key Points

- **Introduction to Betting Approaches** [00:02] — The video introduces two betting approaches: top-down and bottom-up, and states that a top-down approach is recommended.
- **Bottom-Up Approach Explained** [00:16] — A bottom-up bettor starts with the game, watches film, studies injury reports, and makes bets based on personal research. This approach can be profitable but is used by less than 1% of profitable bettors, typically quantitative analysts with sophisticated models.
- **Top-Down Approach Explained** [02:33] — A top-down bettor lets the market do the work, asking 'Is the price of this bet wrong?' instead of 'Who do I think wins?'. They bet numbers, not teams.
- **Using Odds Jam Positive EV Tool** [03:01] — The presenter demonstrates the Odds Jam positive EV tool, which shows bets with positive expected value compared to other sportsbooks. Example: Ben Williamson under 1.5 hits+runs+RBIs at -105 on BetMGM has 5.92% EV because other books offer -130s.
- **Finding Positive EV Plays** [05:53] — Odds Jam shows many positive EV plays. Each bet has an edge, but not every bet wins. Example: Andres Chaparro over 0.5 runs at +140 has 14.23% EV because other books offer +100 or lower.
- **Sharp Money Tool** [07:21] — The sharp money tool identifies crossed market EV bets: soft sportsbook vs sharp sportsbook arbitrage. It filters for bets with positive EV and significant liquidity from sharp bettors, blending top-down and bottom-up approaches.
- **Key Lesson: Price Matters More Than Predictions** [11:12] — Profitable betting is about making better financial decisions, not proving you're smarter than Vegas. Price matters more than predictions. For most bettors, a top-down approach is more realistic than building a predictive model.

### Conclusion

The top-down betting approach, which leverages market inefficiencies and positive expected value, is more accessible and profitable for the majority of sports bettors than trying to outsmart the market with personal research. Tools like Odds Jam can help identify these opportunities.

## Transcript

want to talk to you about a top-down betting approach versus a bottom-up betting approach and why you should be using a top-down betting approach. Now, if you have no idea what any of that means, that's absolutely okay because in
I'm going to explain to you what the difference is between a top-down betting approach and a bottom-up betting approach and how you can start becoming a top-down better today. If you watch sports betting content online than 5
minutes, you've probably heard somebody say, "Just do your research." But, here's the reality. Almost no one who's making money in sports betting is doing it that way. The people winning long-term are using math. And today, I
want to show you why a top-down betting approach is, in my opinion, the best way to bet on sports, why you should be doing it, and how you can get started. As I've alluded to, there's really two ways to approach sports betting, a
bottom-up approach and a top-down approach. Let's start with a bottom-up approach because this is what almost every single sports better thinks they should be doing. A bottom-up better starts with the game. They watch film,
they study injury reports, and after doing all that work, they determine what they think is going to happen in the game or happen with an individual player, and they make their bet. Their decision on what to bet on is derived
from the research they did. Now, before going any further, I want to be clear a bottom-up betting approach can indeed be profitable. There are absolutely sharp bettors that are doing it. The problem is, it's probably less than 1% of all
profitable sports bettors. These people are quantitative analysts. They're people working at trading firms. They're people building sophisticated models with advanced machine learning technologies. And for most of us, we
simply don't have the capabilities to do that. So, instead, we convince ourselves that we have an edge over the betting market because we watch SportsCenter and because we study stats. That's not the same thing as these sophisticated models
that sharp bettors are using. You see, sportsbooks employ entire teams of trading analysts to set their lines, and professional bettors spend years refining their models so they can beat the sportsbook. Thinking you can make
profits simply off of doing your own research is essentially impossible. So, now let's flip over to what a top-down betting approach is. With top-down betting, instead of trying to outsmart the market, you're letting the market do
the work for you. You see, the market has already processed the weather, injuries, public money, and historical data. All of these are factors that went into the sportsbook's line. So, instead of asking, "Who do I think wins?"
top-down bettors are asking, "Is the price of this bet wrong?" That's a completely different question. You're betting numbers, not teams, and that's one of the biggest mindset shifts successful sports bettors make. Now, in
order to show you what a top-down betting approach actually looks like, we're going to head over to the software Odds Jam, and the first thing we're going to do, the first place we're going to go, is the Odds Jam positive EV tool.
This is going to give us textbook examples of what a top-down betting betting approach, we want to use the market to make our decision. So, we can see here over on the left of my screen, in the green, is the EV percentage.
Essentially, that's saying the expected value that we're getting by taking a bet on a certain sportsbook instead of other sportsbooks because these certain sportsbooks are offering us a price that is significantly better than the rest of
the market. So, we can take a look here. Ben Williamson, under one and a half hits plus runs plus RBIs, is at minus 105 on BetMGM. And it's telling us Odds Jam is telling us this has a 5.92% worth of expected value, which in simple
terms means if we took this bet over hundreds of times, we can expect to get hundreds of times, we can expect to get a 5.92% ROI on this prop, showing us we are getting positive expected value. But why are we getting positive expected
again, we see we can take this on BetMGM at minus 105 odds when other books for the under one and a half are offering this in the minus 130s. We can see here, this in the minus 130s. We can see here, No Vig minus 133, minus
136, and then here we go, BetMGM minus 105. Now, for context, No Vig and Profit X are two very sharp betting exchanges. We value their lines very heavily. That's a very good indicator of what the fair price for this prop actually is.
And when we see they offer this prop in the minus 130s, but MGM offers it at minus 105, we know we're getting incredible value. And you have to ask yourself, would you rather take this prop at minus 135 odds on Profit X or at
minus 105 odds on BetMGM? The answer is simple. You're going to make a whole lot more money on BetMGM compared to another sports book offering this prop in the minus 130s. And the reason this is a top-down bet that we're making is
because we're not researching the stats on Ben Williamson or seeing how he does against the opposing starting pitcher to determine if he's going to go over or under one and a half hits plus runs plus RBIs. We're simply letting the smarter
sports books set the market, and we're finding a sports book where the line doesn't match what the actual probability of this outcome should be. This line should clearly, based off the rest of the market market consensus, in
the minus 130s, but BetMGM has been slow to react to the market, and they have their line set it 105, giving us a 5.04% edge against the rest of the market. And as you can see here on Odds Jam, there
are tons of positive EV plays. When you go on Odds Jam, you can simply put in the sportsbooks that you have access to, show the results, and you're going to see tons of EV plays pop up, and every single one of these bets has an edge.
Now, that doesn't mean that every single one of these bets is going to win. We can take a look at this top prop here, Andres Chaparro, over half a run. It's sitting at plus 140 odds. So, not a super likely prop to hit, but it has a
[snorts] 14.23% EV percentage, which again means that over the long run, if we took this bet hundreds of times, we can expect a 14.23% ROI in the market with our profits by
taking this prop. And the reason being is Sportsino offers it at plus 140 when we see other books offer it at plus 100, minus 108, minus 110, minus 114. So, once again, you have to ask yourself, would you rather take the same exact
would you rather take the same exact prop at minus 114 odds or at plus 140 odds? The answer is obviously plus 140 odds, and we can see that Sportsino against these other books is the only one with the line anywhere close to plus
140, which means they're way off of market consensus and therefore giving us a significantly better price than what the actual probability of this outcome happening is, and that's how we can take advantage, and that's how we can utilize
a top-down betting approach to profit in the sports betting market. Now, another tool over on Odds Jam that I want to run through with you is called the sharp money tool. And this is interesting because these are still top-down betting
approach picks, but if [snorts] you wanted to get closer to a blend of a bottom-up approach, this is one of the best instances to do it. Now, what we're seeing on the sharp money tool is a strategy called crossed market EV bets.
These are essentially bets where we have a soft sports book going up against a sharp sports book in an arbitrage bet. And don't worry, you don't need to understand right now what all of that means. Essentially, what we're finding
on the sharp money tool is bets that have positive expected value against a sharper sports book, but are also being backed by a sharp better. And the reason I preface saying that this can kind of be a blend between a bottom-up and a
we're still using the market. We're filtering the market to find where there's value, but we're only taking a play if there is a sharp better on a betting exchange that's putting up a significant amount of money on this
prop. So, let's take a look at this first example here, Red Sox Rays. We can see it, the green number right here. There's $7,071 worth of liquidity on the betting exchanges backing the Boston Red Sox to
right, we're going to see that there was a lot of money going in on this. And notice how it says Tampa Bay Rays, right where I'm highlighting. On a betting exchange like Novibet and Profit Exchange, if I want to go bet $5,000 on
the Boston Red Sox money line, I would need somebody else to fill $5,000 worth on the Tampa Bay Rays money line. Reason being is Novibet and Profit Exchange are peer-to-peer betting exchanges, which means you're not going against the
house. You're going against other users. So, if I put $5,000 down on the Red Sox and no one matched it, I just get my money back because my bet was never placed. This is what we're seeing. We're seeing available liquidity. So, at +115
odds, we can see there's 7.1K worth of liquidity waiting to be matched so a sharp better can grab the Boston Red Sox money line at -115 odds. Long story short, we're seeing Sportsino offering positive EV numbers compared to
sharp betting exchanges and we're seeing how much liquidity sharp bettors are putting down. Now, the sharp bettors who are looking to bet the Red Sox on Novig and Profit X are likely using a bottom-up approach. They are going to
Novig and Profit X to set the market to set their ideal price. They're not using them. They've used their model, they've run their numbers to make a projection that the Red Sox are going to win and
they're backing it with $7,000 worth of confidence. So, when you're using the sharp money tool, you're once again getting positive expected value by using a top-down betting approach and you can go into the the sports book screen and
have access to so you can see where the value lies on the sports books that you use, but you're only going to take a positive expected value play if there's a sharp better who is using a proven model with a bottom-up betting approach
putting a significant amount of money down on that exact same prop. The sharp favorite strategies and one of the strategies that has made me the most money as a sports better and I enjoy using it because I know I'm making a bet
that's backed by math, that's backed by a top-down betting approach, but there's also somebody successful who has a successful model and a successful bottom-up approach that is putting significant capital down on this bet.
So, it almost gives me a second vote or an additional vote of confidence on this play because I know there's a very sharp better out there who really likes this prop and wanted to put a significant amount of money down on it, but I'm also
getting a positive expected value price or a top-down bet on the same exact play. Now, when I first started sports betting, I was just like everyone else. I wanted to study the stats, I wanted to watch the games and let those opinions
that I formed make my bets, but profitable betting is not about proving that you're smarter than Vegas. It's about making better financial decisions. The biggest lesson that I can give to any sports better trying to become
profitable is that price matters more than predictions. If you're someone who genuinely wants to build your own predictive model, go for it. There are people who do it successfully, but understand that pathway is incredibly
difficult. For the overwhelming majority of bettors, a top-down betting approach is way more realistic. Instead of trying to beat the sportsbooks at their own game, use the information that's already in the market. If you want to check out
tool that we looked at today, we'll leave a link to those tools in the enjoyed this video, make sure you like and subscribe and leave a comment to let and subscribe and leave a comment to let us know what you want to see next.