Players throw and catch at different angles. One play may require a fielder to catch the ball at knee height and throw at waist height. Another time the ball might come in above the head and get thrown at shoulder height. The combinations are endless.
That’s why it’s important to train your players to catch and throw using a variety of angles. The angle they use for a given scenario depends on the trajectory of the ball when receiving and where they intend to throw it. If you can get your athletes comfortable fielding at different angles, they’ll become quicker when transitioning from catching to throwing.