Defenders might attempt to change the position of the mark to prevent give and go moves; this drill helps you to deal with that by using your pivot to avoid the mark entirely
A handler, A, starts with the disc around 10m in from a sideline. A defender, D1, applies a straight up mark. A cutter, B, starts in a central position. B is guarded by D2, who starts behind B.
D1 > A > D2 > B