There's no bigger event on the opening weekend of NCAA wrestling than the Michigan State Open. With double-digit D1 teams, we're sure to see incredible matches and rankings shakeups. This will also be our first look at a number of high-powered true freshmen against college competition. Check out the full MSU Open field below with ranked wrestlers at the top of each weight.

This weekend, Lincoln, Nebraska plays host to the U23 World Team Trials, an event featuring some top NCAA athletes vying for World Team spots.

Week 4 of NCAA wrestling had another healthy dose of upsets, and a few freshmen notched wins that should get them into the rankings. Of the 18 upsets this weekend, half came against top ten opponents. Here's every one we could find. If you saw an upset we missed, email david.bray@flosports.tv or dm @_davidbray on Twitter.