The Ultimate Professional Guide to Winning at Sports Betting by Henrygoldman - HTML preview

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Chapter 4 - Odds conversion chart

The following table is a list of all the likely odds you will come across and the corresponding percentage figure that you will need. Simply, list which odds you are using, find the corresponding percentage figure, add the percentage figure up. If the total is less than 100 % you have an arbitrage (arb). This understanding of this table will be essential for you in succeeding in this business.

English

European

USA

Percentage

80/1

81.0

+8,000

1.24

66/1

67.0

+6,600

1.49

50/1

51.0

+5,000

1.96

33/1

34.0

+3,300

2.94

25/1

26.0

+2,500

3.85

20/1

21.0

+2,000

4.76

18/1

19.0

+1,800

5.26

16/1

17.0

+1,600

5.88

14/1

15.0

+1,400

6.67

12/1

13.0

+1,200

7.69

11/1

12.0

+1,100

8.33

10/1

11.0

+1,000

9.09

9/1

10.0

+900

10.00

17/2

9.5

+850

10.53

8/1

9.0

+800

11.11

15/2

8.5

+750

11.76

7/1

8.0

+700

12.50

13/2

7.5

+650

13.33

6/1

7.0

+600

14.29

11/2

6.5

+550

15.38

5/1

6.0

+500

16.67

5.8

+480

17.24

5.6

+460

17.86

9/2

5.5

+450

18.18

5.3

+430

18.87

4/1

5.0

+400

20.00

4.7

+370

21.28

7/2

4.5

+350

22.22

4.4

+340

22.73

100/30

4.33

+333

23.08

4.2

+320

23.81

3/1

4.0

+300

25.00

14/5

3.8

+280

26.32

11/4

3.75

+275

26.67

13/5

3.6

+260

27.78

5/2

3.5

+250

28.57

12/5

3.4

+240

29.41

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3.3

+230

30.30

9/4

3.25

+225

30.77

11/5

3.2

+220

31.25

85/40

3.12

+212

32.05

21/10

3.1

+210

32.26

2/1

3.0

+200

33.33

2.9

+190

34.48

15/8

2.87

+187

34.78

9/5

2.8

+180

35.71

7/4

2.75

+175

36.36

2.7

+170

37.04

13/8

2.62

+162

38.10

8/5

2.6

+160

38.46

6/4

2.5

+150

40.00

2.46

+146

40.65

7/5

2.4

+140

41.67

11/8

2.37

+137

42.11

2.35

+135

42.55

2.3

+130

43.48

5/4

2.25

+125

44.44

6/5

2.2

+120

45.45

2.15

+115

46.51

11/10

2.1

+110

47.62

2.05

+105

48.78

Evens

2.0

+100

50.00

1.95

51.28

10/11

1.9

-110

52.38

1.85

54.05

5/6

1.83

-120

54.55

4/5

1.8

-125

55.56

8/11

1.73

-137

57.89

4/6

1.67

-150

60.00

1.65

60.61

8/13

1.62

-161

61.90

1.6

62.50

4/7

1.57

-175

63.64

1.55

64.52

8/15

1.53

-190

65.22

1/2

1.50

-200

66.67

1.45

68.97

4/9

1.44

-225

69.23

2/5

1.40

-250

71.43

4/11

1.36

-275

73.33

1/3

1.33

-300

75.00

3/10

1.30

-330

76.93

2/7

1.28

-350

77.78

1/4

1.25

-400

80.00

2/9

1.22

-450

81.82

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1/5

1.20

-500

83.33

2/11

1.18

-550

84.62

1/6

1.16

-600

85.71

2/13

1.15

-650

86.67

1/7

1.14

-700

87.50

2/15

1.13

-750

88.24

1/8

1.12

-800

88.89

1/9

1.11

-900

90.00

1/10

1.10

-1000

90.91

1/11

1.09

-1100

91.67

1/12

1.08

-1200

92.31

1/14

1.07

-1400

93.33

1/16

1.06

-1600

94.12

1/20

1.05

-2000

95.24

Here are some examples that use the table above: Soccer match getting the best odds from all the bookmakers. (Odds are in fractional format).

Fractional Percent

Stake

Stake

Odds

Calculation

Team A

Evens

50.00%

£100 * 50.00%

£50.00

Team B

9/4

30.77%

£100 * 30.77%

£30.77

Draw

11/2

15.38%

£100 * 15.38%

£15.38

Total

96.15%

£96.15

Total percentage of 96.15%, therefore we have an arb. If you want to stake £96.15

you will have £100 returned. A profit of about 3.85%.

Tennis match best odds from all the bookmakers. (Odds are in European format).

Decimal

Percent

Stake

Stake

Odds

Calculation

Player A

1.8

55.56%

£100 * 55.56%

£55.56

Player B

2.1

47.62%

£100 * 47.62%

£47.62

Total

103.18%

£103.18

Total percentage of 103.18%, therefore we don’t have an arb to bet on as the percentage is over 100%.

Often you will find that the types of odds format are mixed as the different bookmakers may only offer prices in their chosen format. Not a problem, just do the relevant conversion.

Golf 2-ball best odds from all the bookmakers. (Odds are in European and British format).

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Mixed

Percent

Stake

Stake

Odds

Calculation

Player A

1.8

55.56%

£100 * 55.56%

£55.56

Player B

9/4

30.77%

£100 * 30.77%

£30.77

Total

86.33%

£86.33

Player A to win

1.8

Player B to win

9/4

Therefore check the chart:

Percentage for player A to win is 55.56%

Percentage for team B to win is 30.77%

Total percentage of 86.33%, therefore we have a very lucrative arb to bet on.

If you want to bet a total of £500 then your stakes are:

£277.80 on player A (55.56% of £500).

£153.85 on player B (30.77% of £500).

Total stakes £431.65, total returned £500.

With the American style odds the way of finding an arbitrage is even easier. If the two numbers added together are greater than zero then you have an arbitrage bet.

American Percent

Stake

Stake

Odds

Calculation

Player A

-110

52.38%

£100 * 52.38%

£52.38

Player B

+137

42.11%

£100 * 42.11%

£42.11

Total

+27

94.49%

£94.49

Golf 2-ball best odds from all the bookmakers. (Odds are in US format and European format).

Player A to win

-110 (1.9)

Player B to win

+137 (2.37)

Therefore check the chart:

Percentage for player A to win is 52.38%

Percentage for player B to win is 42.11%

Just from adding up the US format odds we find that we have an arb because the figure is greater than zero (-110 +137 = +27). The percentage arb is just over 5%.

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