# Bookmaker List The bookmaker list allows the user to create a specific and prioritized set of bookmakers, usually the most relevant competition, to be used in the monitoring section for comparison and market average calculation purposes. A bookmaker list can be configured on the global, category, or even tournament level. This allows for nuanced comparison from sport to sport or tournament to tournament. On each bookmaker list the user can assign each individual bookmaker a weight out of 500, this allows for further customization of each list. Certain bookmakers who may specialize or be most relevant for a particular sport or tournament can therefore be prioritized. To create a bookmaker list, the user should first navigate to the level of the sports tree on which they wish this list to apply. This works in a top down hierarchical fashion i.e. a bookmaker list configured on a category level will apply to all tournaments within that category, unless one of those tournaments has its own bookmaker list specifically modified. However, that same bookmaker list configuration applied on the same category level will not apply on a global level (across all other categories). In the screenshot below the user is creating a bookmaker list specifically for NFL (Orange below). Bookmakers can be added to the list in two ways; ‘suggested’ bookmakers will be automatically listed (green below) these suggestions are inherited from the nearest level above that has a bookmaker list configuration (in this case global level). Clicking the plus icon beside a suggested bookmaker will add them to the list being built, once added the user can then assign that bookmaker a specific weight. Alternatively, the user can choose from a drop-down list of all available bookmakers (blue below) and enter a weighting to determine where on the list that new bookmaker will appear, as they are sorted from bigger to lower weight.
In this example, a MotoGP bookmaker list is being configured through a clear three-step process: * Navigate to the Desired Level Start by selecting the level in the sports tree where you want to apply the bookmaker list. In this case, the configuration is being applied specifically to MotoGP, under Motorcycle Racing in Motorsport. * Add Bookmakers and customize their weight From the bookmaker list panel, bookmakers are automatically added from the suggested options. Their weight can be adjusted if needed. You can also select additional bookmakers, customize their weight and they will then appear in your list. You can assign each individual bookmaker a weight out of 500. This determines their influence in market average calculations. The top three bookmakers by weight are visually highlighted in gold, silver, and bronze. * View the Result The final list reflects your configuration. You can expand each bookmaker row using the arrow icon to compare its current settings with those inherited from higher levels. You can also toggle between viewing Configured levels or All levels using the switch at the top of the column. {% hint style="info" %} Additionally, you can activate or deactivate individual bookmakers using the checkbox. Active bookmakers contribute to market averages. Inactive ones move to the lower section as display-only and no longer affect calculations, though their odds still appear in Match Up view for reference. {% endhint %} It is important to note that the bookmakers selected here will not affect the odds suggestions Betradar provides; rather, this configuration only affects the monitoring aspects of Ctrl.
#### How to choose the weights for the bookmakers in the Bookmaker list The relation between the weights you have chosen for bookmakers has a significant effect on the way the market average odds are calculated, as they use a relative scale. Please kindly review the 2 examples below to better understand the impact of different weights. **Example A:** The weight of the selected bookmakers declines progressively from the maximum weight of 500 in moderate steps, as shown in the green box below. In this case, a change in the odds from Tipico will not have a significant impact on the average odds, given that Bet365 and William Hill also have high weights assigned. If those 2 remain stable, the calculated market average will only suffer a slight change.
In case the odds from a certain bookmaker in the list get removed, the impact of such removal will be the following: let´s assume the odds from Bet365 get removed for the 1x2 market above. In this case, Bet365 represents roughly 20% of the total weight (500 out of 2400, which is 20,83% of the total weight). The market average odds will be adjusted accordingly. **Example B:** The bookmakers’ weights decline rapidly. In this case (as shown below), if Bet365 changes its odds, this will have a significant impact on the calculated market average.
In this example, Bet365 represents roughly 75% of the total weight (500 out of 670 which is 74,63% of the total weight), which means that in case they remove the odds, the market average odds will be affected heavily. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.sportradar.com/ctrl/guide/configuration/bookmaker-list.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.