"Carry the ball" is a common expression used to denote responsibility or leadership in a specific task or project. There are several synonyms for this phrase that can be used interchangeably. Some of the most commonly used synonyms for "carry the ball" include "take the lead," "assume control," "drive the project," "be in charge," and "run the show." Each of these phrases conveys the same basic meaning, which is to take on a primary role in ensuring the success or completion of a project or task. Using these synonyms can lend variety and nuance to your writing or speaking, allowing you to switch up your language from time to time.