No, they were all serve. I have watched Ivanisevic play, he had horrendous ground game. Not top 50 level. Krajicek, same thing, both made a career of serving people off court in an era where courts played like ice rink.
Funny thing is that Ivanisevic sometimes played decent clay court tennis. And had an entertaining perspnality. One of the stranger players in history. Krajicek, by contrast, was just dull. Him, Rusedski. Philippoussis - these were no good times in mens' tennis.