World No. 2 Rafael Nadal of Spain is second on another list now, having won 47 consecutive clay-court matches to surpass Bjorn Borg. He stands behind only the 53 straight ticked off by Argentina's Guillermo Vilas almost 30 years ago.
Of course, all those guys are pikers compared to Chris Evert. Her clay court win streak -- 125 matches from August 1973 to May 1979 -- is the longest on a single-surface by any player, male or female.