Here's a small vid and writeup about it from Dyestat ...
http://www.dyestat.com/gprofile.php?mgroup_id=44531&do=news&news_id=422532-Christopher-Nilsen-HS-record-pole-vault-18-4-75-DyeStat
Here's a repeat of what I posted on the High School Grade Records thread yesterday, but I think this surprising and amazing deserves its own thread!
From http://www.athletic.net/TrackAndField/A ... 270885#/L0
Pole Vault
2013 Outdoor 9 10' 0.00
2014 Outdoor 10 12' 3.00
2015 Outdoor 11 17' 0.00
2016 Indoor 12 17' 6.50
2016 Outdoor 12 18' 0.00
They haven't updated his latest 2016 mark yet.
That's an amazing 4-year progression! Especially from 12-3 to 17-0!

Kirk