add page on margining odds

content/en/docs/sports/api/margins.md

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+---
+title: Margin Adjustments in Sports Betting
+linkTitle: Margin Adjustments
+description: Learn how to adjust margins in sports betting to set your own odds based on the data the Cloudbet B2B API supplies.
+weight: 10
+type: docs
+---
+
+You can integrate the Cloudbet B2B API and set your own odds based on the data supplied, enabling you to carve out a profitable margin for each transaction. Alongside margins, you can also take control of and share liability from the individual bets that players or customers place through your platform.
+
+### Basic Implied Probability Calculation
+
+The implied probability of an outcome is initially calculated from the given odds and the overround. For a specific betting market:
+
+```math
+\tag*{(1)} \text{Implied Probability} = \frac{1}{\text{Odds} \times \text{Overround}}
+```
+
+This calculation gives a base probability adjusted for the bookmaker's initial margin embedded within the odds.
+
+### Adjusting the Overround
+
+To reflect changes in market conditions, event specifics, or risk assessments, the overround is adjusted by adding a margin percentage:
+
+```math
+\tag*{(2)} \text{Adjusted Overround} = \text{Overround} + \text{Margin Percentage}
+```
+
+This formula ensures that the total market margin is adaptive and adjusts with the origin.
+
+### Recalculating Odds with Adjusted Overround
+
+After adjusting the overround, new odds are recalculated as follows:
+
+```math
+\tag*{(3)} \text{New Odds} = \frac{1}{\text{Implied Probability} \times \text{Adjusted Overround}}
+```
+
+This method of recalculating the odds maintains the relative value between different outcomes while adjusting the overall margin.
+
+### Example Calculation
+
+If the initial odds for a team winning are 2.0 with an overround of 1.05, the implied probability is:
+
+```math
+\text{Implied Probability} = \frac{1}{2.0 \times 1.05} = 0.4762
+```
+
+If the margin percentage is adjusted to 1.10, the new odds would be:
+
+```math
+\text{New Odds} = \frac{1}{0.4762 \times 1.10} = 1.91
+```
+
+These recalculated odds reflect the adjusted margin and provide a new market price for the outcome.