Grand Slam (tennis) tennis ball, Martina Navratilova finally did it." Although the ITF recognizes what is now unofficially known as the "non-calendar year Grand Slam" on its Roll of Honour, no subsequent player to win four or more majors in a row—Steffi Graf, Serena Williams, or Novak Djokovic—has received bonus prize money. Combining "the" Grand Slam and non-calendar year Grand Slam, the total number of times that players achieved the feat (of being the reigning champion in all four majors) expands to 18. Three women have won four or more consecutive major titles since 1970, with Navratilova taking six in a row in
2015 Andy Murray tennis season lead. While Murray battled back to take the third set in a tiebreaker, Anderson won the match in four sets to reach his first Grand Slam quarterfinal without dropping a point in the last tiebreaker. This ended Murray's five-year run of 18 consecutive Grand Slam Quarterfinals (not counting his withdrawal from the 2013 French Open) since his third round loss to Stan Wawrinka in the 2010 US Open. Playing against Australia in the semifinals of the Davis Cup World Group in Glasgow, Andy Murray won both his singles rubbers in straight sets, against Thanasi Kokkinakis and Bernard Tomic. He also