Pro Kennex Championship Racquetball Balls - 2 Pack. The Pro Kennex Outdoor Championship racquetball balls are vacuum sealed and have been tested and approved by the USRA. Specifically designed for faster and livelier speeds, get your game on today. Features Pro Kennex Racquetball Balls - Pack of 2 Pressureless racquetballs Vacuum sealed USRA Approved Colour: Yellow Brand: Pro Kennex Package Conten ... View more s 2 x Pro Kennex Racquetball Balls ... View less