The MLB usually brings out a very expensive, very high powered camera called the “Phantom Cam” during the World Series in order to show insane slow motion shots. These shots show throws, hits, impacts, and collisions are caught in amazing, high-definition footage. Here you see the Phantom Camera Paused at the moment the ball hits Miguel Cabrerra’s bat. This camera allows you to physically see how the ball bends when hit with a bat
Also, In 2014 a challenge system was put in place for the MLB to use replays to challenge certain umpiring decisions. With the help of cameras that are able to track the ball as it flies through the air, umpires are now able to reassess whether a ball was actually hit over the fence or if it went in foul territory.