Rafa Nadal & Marc Lopez win their QF & reach the medal round. With mixed doubles, Nadal plays 3 matches tomorrow. pic.twitter.com/i586WQ9fiT — Cynthia Tanner (@CJSTanner) August 10, 2016 With most of today’s action wiped out by rain storms, I am going to take a moment to look at doubles.  It is a topic I…