MLB approves high-tech pitching machine, Trajekt Arc, for in-game use in batting cages.

High-tech pitching machine, Trajekt Arc, mimics every pitcher's movements, approved by Major League Baseball for in-game use in batting cages. Using video and data, the robot allows hitters to face recreated pitches from any desired pitcher, helping to train their brain and eyes. The machine costs $15,000-$20,000/month as part of a 3-year lease, a significant leap from the basic pitching gun.