Schalke 04 scored a massive goal in its attempt to advance from the UEFA Champions League Group E when Joel Matip took advantage of a failed Basel offside trap—or, more accurately, a blunder by the linesman.
Despite the set piece happening directly in front of him, and having the 18-yard box line as a measure, the linesman saw nothing wrong with Schalke having four men upfield from the second-to-last Basel defender upon the striking of the free kick. Blown offside calls happen all the time during open play, but for something so egregious to take place on a set piece is mind-boggling. Or, you know, "European soccer." [Fox Soccer]