Magnus Effect                        

When I watch a soccer game, I usually get excited when I see a player curve the ball around the players and score an amazing goal.

So, here is how it works:

A soccer ball is a projectile that is going through the air due to the velocity that is traveling. Well, when a player kicks the ball at a certain angle and a certain velocity the ball starts exerting the magnus effect. Once the ball's velocity drops the magnus effect increases.

"A bird's-eye view of a soccer ball spinning about an axis perpendicular to the flow of air across it. The air travels faster relative to the center of the ball where the periphery of the ball is moving in the same direction as the airflow (left). This reduces the pressure, according to Bernoulli's principle. The pressure increases on the other side of the ball, where the air travels slower relative to the center of the ball (right). There is therefore an imbalance in the forces, and the ball deflects in the same sense as the spin - from bottom right to top left. This lift force is also known as the "Magnus force", after the 19th-century German physicist Gustav Magnus."-      -soccerballworld.com

The magnus effect will make the ball travel with enough speed so it curves in the air to trick the goalkeeper and end up in the net.