If you don't watch that much soccer you probably don't realize the physics of the game. Soccer like billiards is as much a game of angles as it is a game of physical skill. The trajectory of the ball based upon the position of the goal keeper has everything to do with a shot being a goal or a miss.

In this case the player has what appears to be a great angle and the goal keeper is out of position. I did mention physics watch what happens with the ball hits the goal post. It's one of the crazies soccer shots I have ever seen.