I'm a geezer now in my late forties, but did run some competitive 800M times back in my high school days at OFSAA. At 18-19 1:52 high would pretty much result in winning most high-level Canadian high-school races - Hard for me to imagine running 1:46 as a 19 year old, as Gregson has just done!
Very impressive and something you don't see too often. Cheers to Ryan on this one!!