Front-runner used in a sentence

Front-runner in a sentence as a noun

I remembered seeing you guys when you were part of YC. I looked up your app and documentation, and it was immediately clear that you guys are the clear front-runner.

We certainly had a front-runner for her name, but we would have chosen something different if the KnowEm results produced limited availability or if we found negative content associated with our selection.> With her name decided, we spent several hours registering her URL and a vast array of social media sites.