Assistant Referee raise flag -- offsides

Think you have what it takes to be an MLS assistant referee and make that razor-thin offside goal?

The Professional Referee Organization, which oversees refereeing in MLS, posted a video of the types of calls you might have to make on their official YouTube channel on Thursday, giving anyone the opportunity to find out if they have the eye for it.

The video contains 25 different back-to-black clips of borderline offside calls that prospective refs have to make. Check out the video below and stick around to see what grade you get.