Graf and Becker had these driving slices. They were slices, but they were heavier and more "slippery" compared to your average slice. I think their trick was that they really, really leaned into it when they hit it. Can anybody confirm this? When I saw the 2001 Australian Open Semifinals between Rafter and Agassi, I was amazed at how Rafter could occassionally hit this "no pace" slice. Felix Mantilla has said, "When you see his slice, you think, "OK, I can hit that.' It's going so slowly, it's like my mother is hitting the ball," So, how'd he hit that?