If there truly is a secret to the success Sloane Stephens enjoys at Grand Slam tournaments, she isn't willing to share it. After beating No. 22 Ekaterina Makarova of Russia 6-3, 6-4 to reach the fourth round at the French Open for the third year in a row, the 15th-seeded Stephens insisted Saturday that even she can't quite put a finger on why her results are so much better at tennis' four most important events than anywhere else. Honestly, if I had the answer and I knew,'' Stephens said, pivoting in her news conference chair and holding her arms out wide, ''I would tell you guys. She's made it to the second week at each of the past six majors, a run that began with a semifinal appearance at the 2013 Australian Open and stands as the longest active streak among women. More...