I have heard the following dialogue in the TV series Marseille:
- Politician: De toute façon, t'as aucune chance.
- Mayor: Parce que je suis sorti de la campagne ? Attends que j'y revienne.
- Politician: Je vais aider Barrès à te foutre au tapis.
Context: The mayor of Marseille is negotiating with a politician his support in the municipal elections against his former ally and current opponent Lucas Barrès.
What does "foutre quelqu'un au tapis" mean? "to beat someone" (in the context of a competition) ?