What happened: Sportsnet analyst Justin Bourne broke down an impressive opening period of play from Gavin McKenna. The rookie was described as looking 'really comfortable out there' during his shifts.

Why it matters: Gavin McKenna is pushing to solidify a roster spot during his first training camp with Toronto. Earning high marks for early composure is a positive indicator of his readiness for professional competition.

What to watch: The top pick's ice time and production will be closely monitored as the preseason continues.