Hustler982 said:
i think its like: lets say its Yanks vs Mets..
Matchbook has: Yanks -120 Mets +110
Pinnacle has: Yanks -115 Mets +100
you buy Yanks -115 at Pinnacle, then wait for the line to go up to like Yanks -140 Mets +125 and buy Mets +125 and u make $10 if u bet 100 on each.
Am I right? Please correct me if im wrong, this is the way i percieved it .. never done so tho.
This is more what is known as "chasing steam," ie betting on which way you believe the line will move. Yes, when you are correct this is still a scalp, but traditionally the concept of scalping involves lines that can be bet immediately to turn a profit. These advantages are usually quite small (usually a few cents each) and thus in order to make scalping worthwhile you need a relatively large bankroll (I've heard people reccommend at least $20,000, but I think it can be worthwhile with less than that). In my opinion, this is mainly because a) in principle, you want to use your entire bankroll in a scalp in order to make as large a profit as possible. This ties up your entire bankroll, preventing you from betting other games, meaning that the money you make from a scalp should be enough that you are better off scalping than simply betting your plays (higher expected value) and b) there is no point in making a scalp to earn $5 if you're paying more than that in withdrawl fees from Pinny (and possibly other books? I only use Pinny) when moving money around from book to book for a scalp.
Here is an example of a relatively common scalp:
Pinny: Angels -135 Rangers +125
Matchbook: Angels -122 Rangers +112
How can you tell that this is a scalp? Because the Rangers +125 at Pinny is larger than Angels -122 at Matchbook. Add these numbers together and you get a positive number: +3. This is a 3 cent scalp.
Next we must decide how much to bet on each game. This is where many people, especially those unfamiliar with scalping go wrong. They bet equal amounts on each side. For example, they would bet $1000 on the Rangers +125 and $1220 on the Angels -122. If the Rangers win they would win $1250 and lose $1220, turning an overall profit of $30. If the Angels win however, they would win $1000 on the Angels and lose $1000 on the Rangers, breaking even. This is
NOT the optimal approach. Instead we should bet unequal amounts on each team so that we can turn a profit no matter who wins. But how much to bet? Hope you paid attention in algebra class!
This can be figured out by the following equations:
ax = by
x + y = z
where
a = line on the favorite (in decimal price)
b = line on the dog (in decimal price)
x = the amount you need to bet on the favorite
y = the amount you need to bet on the dog
z = the amount you will be using for this scalp total (bankroll)
We know a, b and z and we must now solve for x and y.
First we must convert American odds to decimal odds. -122 equates to 1.8197 and +125 equates to 2.25. To do this, click on the following link and plug in the numbers:
https://www.smartcapper.com/tool_odds_converter.html
OK, here we go, hold on tight:
a = 1.8197
b = 2.25
x = ?
y = ?
z = $1000 (in this example - your number will vary depending on your bankroll)
ax = by
1.8197x = 2.25y
x = 1.2365y (approximately)
x + y = z
1.2365y + y = 1000
2.2365y = 1000
y = 1000 / 2.2365
y = 447.13
x = z - y
x = 1000 -447.13
x = 552.87
Thus in this case we would bet $552.87 (RISK $552.87, not "to win" $552.87, this is important) on the favorite (Angels) and $447.13 on the dog (Rangers).
If the Angels win, we win $453.17 and lose $447.13 for a profit of $6.04.
If the Rangers win, we win $558.91 and lose $552.87 for a profit of $6.04.
I hope this is relatively clear to everyone. It's 4:15am and I've gotten 12 hours of sleep the past 3 nights combined so there's a distinct possibility that what I wrote only makes sense to me at this point. Let me know if you guys find this helpful. I think I will start a new thread on scalping soon with this info in it so it is easier for folks to find. In fact, I may even make a website with this information in it. Hmmm...
Well goodnight all.