Posts Tagged ‘Trading Techniques’

Boosting Profits With Middles & Sides

Thursday, January 1st, 2009
Sports Arbitrage Trading Techniques

Sports Arbitrage Advanced Trading Techniques

Middles (and Sides) are a particular type of low-risk trade which takes advantage of differences of opinion between bookmakers over handicaps and/or total scores

When A Middle is successful, both sides of the trade win resulting in a double-payout. When a Side is successful, one bet wins whilst the other has its stake returned.

In both cases, the wins can be significant compared to the low risks involved.

Although it is impossible to predict the future, a professional middles trader can probably expect to make an average of about 5% per trade over the course of a year. This compares with the average arbitrage profit of around 3%

Of course, your actual percentage return will depend on how actively you trade – a trader who places 1000 middles over the year will have significantly better success than a trader who places just 50 in the same period.

Middles & Sides are mainly in 2 types of market: runlines (handicap match-bets) and total points markets.

Example 1: Runline Middle

Team A

Team B

Bookmaker 1

H’Cap +9, Price 1.91

H’Cap -9, Price 1.91

Bookmaker 2

H’Cap +5, Price 1.91

H’Cap -5, Price 1.91

A 4-point Middle exists between Bookmaker 1′s +9 on Team A and Bookmaker 2′s -5 on Team B
A trader who bets a total of $500 ($250 on each team) on this Middle faces the following possible outcomes:

Outcome of the match

Result of the bets

Trader’s Profit/Loss

Middle/Side/Loss

Team A loses by
more than 9 points

Bet on Team B wins

$477.50-$500 =
LOSE $22.50

LOSS
- $22.50

Team A loses
by 5 points

Bet on Team A wins
Bet on Team B pushes

$477.50+$250-$500=
WIN $227.50

SIDE
+ $227.50

Team A loses
by exactly 9 points

Bet on Team B wins
Bet on Team A pushes

$477.50+$250-$500=
WIN $227.50

SIDE
+ $227.50

Team A loses
by 6 points

Bet on Team A wins
Bet on Team B wins

$477.50+$477.50-$500=
WIN $455

MIDDLE
+$455

Team A loses
by?7 points

Bet on Team A wins
Bet on Team B wins

$477.50+$477.50-$500=
WIN $455

MIDDLE
+$455

Team A loses
by?8 points

Bet on Team A wins
Bet on Team B wins

$477.50+$477.50-$500=
WIN $455

MIDDLE
+$455

Team A Wins

Bet on Team A wins

$477.50-$500 =
?LOSE $22.50

LOSS
- $22.50

Team A loses by 0, 1, 2, 3 or 4 points

Bet on Team A wins

$477.50-$500 =
?LOSE $22.50

LOSS
- $22.50

There are 7 outcomes which will result in a loss of $22.50

There are 2 outcomes which will result in a win of $227.50

There are 3 outcomes which will result in a win of $455.00
A similar situation exists with Middles in the Totals markets:


Team A

Team B

Bookmaker 1

Under 25, Price 1.91

Over 25, Price 1.91

Bookmaker 2

Under 35, Price 1.91

Over 35, Price 1.91

A 10-point Middle exists between Bookmaker 1′s Over 25 and Bookmaker 2′s Under 35
A trader who bets a total of $500 ($250 on each) on this Middle faces the following possible outcomes:

Actual Points Total

Result of the bets

Trader’s Profit/Loss

Middle/Side/Loss

Under 25

Bet on
Under 35 wins

$477.50-$500 =
LOSE $22.50

LOSS
- $22.50

Exactly 25

Bet on
Under 35 wins
Bet on
Over 25 pushes

$477.50+$250-$500=
WIN $227.50

SIDE
+ $227.50

Exactly 35

Bet on
Over 25 wins
Bet on
Under 35 pushes

$477.50+$250-$500=
WIN $227.50

SIDE
+ $227.50

26, 27, 28, 29, 30, 31, 32, 33, 34

Bet on
Over 25 wins
Bet on
Under 35 wins

$477.50+$477.50-$500=
WIN $455

MIDDLE
+$455

Over 35

Bet on
Over 35 wins

$477.50-$500 =
LOSE $22.50

LOSS
- $22.50

There are 2 outcomes which will result in a loss of $22.50

There are 2 outcomes which will result in a win of $227.50

There are 9 outcomes which will result in a win of $455.00

Trap Numbers

Trap Numbers (sometimes referred to as key numbers) need to be taken into account when calculating the value of a middle.

These numbers arise due to nuances in a particular sport. For example, in NFL between 1982 to 2001 3 numbers stand out:

Just over 10% of matches priced at +7 finished at +7.
Just over 10% of matches priced at +3 finished at +3.
Well under 1% of matches finished on 0 (a tie).

In contrast, for other handicaps, the outcome of the match finished on the number of the time.

Ties in NFL are almost non-existent because there is usually a score in overtime. The scoring in NFL is 3 points for field goals, 5 for a touchdown and 2 for a conversion, which means that the scores usually increase by 3 or 7 each time.

Thus, 3 and 7 are Trap numbers in NFL.

Not for everyone

Trading Middles & Sides is not for everyone. With the opportunity for higher profits come risks. Although these risks are tightly controlled, if you are risk-averse then you will probably prefer to concentrate on sports arbitrage.

However, if trading middles & sides does interest you, then the automated service within the TraderZone may be just what you need. Using the same engine which locates sports arbitrage trades, our servers scan for middles & sides in the following sports:

MLB
NBA
NHL
NFL
Rugby
Soccer

The suite of Middles filters allows you to define with precision exactly what type of trades you will receive. You will be able to change your settings at any time in order to experiment with your trading.

To try it out, just log into the TraderZone and click for the Middles free trial.

Sportsbook’s Vig Makes No Odds To Sports Arbitrage Traders

Monday, September 29th, 2008

I often see misunderstandings arise over bookmakers’ vigorish (vig), the profit or commission the layer makes on his book. You don’t have to look too hard around the web to find people claiming that sports arbitrage trades cannot exist once the Vig has been taken into account.

In fact, the vig is not relevant to sports arbitrage traders because it is built into the prices offered by the bookmakers. If those prices create an arb, the trader will place his bets. If the don’t, then he won’t.
Here is an example.

When a bookmaker sets his prices like this:

Team A: -110
Team B: -110

A customer has to risk £110 in order to win £100. 

The sportsbook’s vig, or profit-margin in this case is 10% – if he gets 2-way action on the match, with different customers betting on different teams, for every £110 he receives, he pays out only £100.

You see, the vig is not a separate fee – it is a margin that is built into the sportsbook’s prices

Let’s look at an example of a sports arbitrage trade, whilst keeping an eye on each bookmaker’s vig:

Sportsbook 1:

Team A: -110
Team B: -110

You can see that Sportsbook 1 has a vig of 10%

Sportsbook 2:

Team A: +150
Team B: -233

At these prices, Sportsbook 2 also has a vig of 10% but a very different opinion of the likely outcome of the match.

By taking the price of +150 on Team A from Sportsbook 2 and the price of -110 on Team B from Sportsbook 1:

Team A: +150
Team B: -110

We have an arbitrage of approximately 8% – that is, for every £100 invested and staked in the correct proportion, the guaranteed return is approximately £108, even while each bookmaker has his vig.


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