Cutting wrestling mats to fit a space is a simple process that can be done with a few tools and precision. Depending on the direction you are cutting, there are a couple different techniques you can use. If you are cutting the length of the mat, on or near a flex segment of the mat, you can run your utility knife along the gap in the foam. If you are making any other cuts, mark the mat and using a straight edge, line up your marks up for an even cut. Then using a retractable, heavy-duty utility knife begin cutting the mat. You might have to run the knife through the mat a few times to fully cut through all layers of the mat.