One commentator when asked to compare King's volley to Martina's said she preferred King's because it had more variety. "She could do more things with it but Martina's volley had more power. " I have not seen that much of King and almost none on a surface other than grass. What volleys did she hit that Martina did not? i know King was about as clever a tactician as there was as to where to put a series of volleys but did she have more variety. I saw lots of underspin and great selection. Martina did not need a series. The power of the approach and first made the rest superfluous. Seemed to me she had every drop and angle King did though.