As one of the WWE's "Big Four" pay-per-view shows, SummerSlam has had its fair share of drama down the years.
We've seen lots of iconic matches that have captivated the audience's imagination, with some of the finest wrestlers of all time putting in perhaps their best career performances at the event.
But away from the good, there has also been plenty of controversy, too—moments that catch everyone by surprise, or just moments that disappoint and anger wrestling fans. And as we all know, that is something that isn't too hard to do.
But what are the most controversial moments in SummerSlam history? There have been plenty, but here are five of the best.