What happened: The Sept. 12 matchup takes place at Centre Slush Puppie in Gatineau, Quebec. [Tournament details](https://www.nhl.com/senators/news/sens-to-host-nhl-prospect-challenge-in-gatineau-this-september)

Why it matters: Ottawa prospects have an opportunity to make their case for main training camp and the upcoming season’s opening roster. [Senators prospect outlook](https://frontend.d3.nhle.com/senators/news/six-prospects-to-watch-as-the-senators-head-into-september)

What to watch: Watch which prospects earn further consideration when Ottawa assembles its main camp.