Simona Halep finally elevating her performance at Grand Slams

• Can we compromise and say 3.5? No one would argue that Murray's achievements don't compare with those of the other three (you know, the Big Three.) But we're talking about a multi-Slam winner, who has spent years consistently going deep in the Grand Slams regardless of surface. (And I do give much credence to the Olympics which most players prepared for -- physically and mentally -- as if it were a Major.) Murray has been to seven Slam finals. Wawrinka, Del Potro and Hewitt have been to six, combined. Murray has gone almost four years without losing before the quarters of a Major. I'm prepared to err on the side of overinclusion here.

Jon Wertheim is a senior writer for Sports Illustrated and has been part of the full-time SI writing staff since 1997, largely focusing on the tennis beat, sports business and social issues, and enterprise journalism. In addition to his work at SI, he is a correspondent for “60 Minutes” and a commentator for The Tennis Channel. He has authored 11 books and has been honored with two Emmys, numerous writing and investigative journalism awards, and the Eugene Scott Award from the International Tennis Hall of Fame. Wertheim is a longtime member of the New York Bar Association (retired), the International Tennis Writers Association and the Writers Guild of America. He has a bachelor’s in history from Yale University and received a law degree from the University of Pennsylvania. He resides in New York City and Paris with his wife, who is a divorce mediator and adjunct law professor. They have two children.