From changeovers in dominance to a new way of looking at ball marks, here's what to look for as tennis moves on to clay.

Tsitsipas thrives at the Monte Carlo Masters, where he has won three of the past four tournaments. Much of that comes from ...

So said David Fay back in 1989, when he was the USGA’s executive director and Karsten Solheim was filing a $100 million ...