Why do pros use an 18x20 string pattern?

Professional tennis players often choose an 18x20 string pattern for its benefits in control and precision. This denser string layout offers a more consistent feel and allows for greater accuracy on shots, which is crucial at high levels of play. Additionally, the 18x20 pattern provides enhanced durability, making it suitable for players who hit with significant spin and power. Overall, this configuration supports a more strategic and calculated style of play.