Players adapt their movement on grass versus hard courts primarily due to the differences in surface characteristics. On grass, which offers a softer, faster surface with less traction, players tend to utilize shorter, quicker steps to maintain balance and stability while navigating the slick areas that can cause slips. This requires more emphasis on footwork precision and timing, as the ball tends to bounce lower and faster, leading to a need for quicker reflexes. Conversely, on hard courts, players can use longer strides and more aggressive footwork since the surface provides consistent bounce and better traction, allowing for more powerful and extended movements. The ability to slide on hard courts also plays a role in shot preparation, adapting movement strategies to capitalize on the bounce and speed of the balls. Overall, these adaptations are crucial for optimizing performance and minimizing the risk of injury on different playing surfaces.