Whenever Wilson develops a new tennis racquet in their popular lineup of 6.1 racquets, they also include a racquet with an 18x20 string pattern. That is the main difference between this racquet and the Wilson Six.One 95 (16x18). The majority of players are seeking the extra spin that an open string pattern will provide, but there are also those players that like to hit flat shots and that requires pinpoint precision, which is where the Wilson Six.One 95 (18x20) really shines through. This is a demanding racquet, so players at the 4.5 NTRP level and above are best served using this model.
In addition to the BLX and Amplifeel technology that Wilson had already incorporated in the previous lineup, players now get the benefit of the latest innovation, which is parallel drilling. This improves the angle of the string holes, which results in a slightly larger sweetspot and more power. For a dense string pattern this is even more important, because more holes being drilled in the frame means more holes where there is friction created, but parallel drilling minimizes this effect.