The First Run Gelded filter

A first run after gelding is one of the form book's classic fresh-start angles. The First Run Gelded filter finds every such run in the history, and today's qualifiers with it.

Open the Data Filters panel on ProStats and you will find First Run Gelded with a simple Yes/No choice.

Set it to Yes and the history narrows to first runs after gelding, so you can measure the angle properly: by trainer, by course, by distance, or crossed with any other filter in the panel. Set it to No to exclude them instead.

A few details worth knowing:

• The flag is stamped on every run in the database, so the figures come from the full history, not a recent window.
• It pairs naturally with the Debutant filter and the trainer group-by: some yards are demonstrably sharper with a freshly gelded horse than others, and now you can see which.
• Like every data filter, it feeds saved filtersets, so a first-run-gelded system can alert you through Today's Qualifiers.

The First Run Gelded filter is available to Professional members.