36 Srixon Z-Star / Z-Star XV Assorted Mix Used Golf Balls (4A Grade). Considered one of the best value premium golf balls, the Srixon Z-Star was the golf ball that won the 2021 Masters. 4A Grade (AAAA) Balls will have minor blemishes consisting of at least one of the following: slight discoloring, pen marks covering at least 4 dimples, minor surface scuffing but will not affect performance.