Colorado Rankings: December

Anna Hall tops the rankings in four events.

We're barely halfway through December and there are already a handful of insanely impressive performances on the boards.

Among the performances that are currently No. 1 in the U.S. include Max Manson's 17-0.25 in the pole vaultZion Gordon'z 6.87 in the 60, and Anna Hall's 39.71 in the 300.