First, my post-US Open sabbatical is over, and I am glad to be writing about tennis once more.   Second, I am not departing on the HMS Beagle, but tennis has its own historical record nicely preserved on sites such as youtube.  In my Tim Mayotte interview, I posted a video in which Mayotte described pieces of the tennis we see today being present in previous eras.  I am launching an on-going series in which I will try to dig into key moments of tennis techniques shifting on the pro-tour and looking at why such techniques were shifting.  Below we can see some similarities and differences between the forehands of 3 great champions.