Simona Halep defeated Kate Makarova 6-1 7-6 in the New Haven quarter-final on hard. The upset overturned the form book — Kate Makarova came in defending last year's round of 32.
Halep S. took it in straight sets.
Halep S. and Makarova K. faced 12 of the same opponents in the last 12 months. Halep S. went 7–7 (50%) against them, Makarova K. 5–10 (33%). Halep S. came out better against 3 of 9 comparable opponents, Makarova K. against 1.
Simona Halep beat Kate Makarova 6-1 7-6. Umpiry, "Simona Halep vs Kate Makarova — New Haven Quarter-final", https://umpiry.com/match/2013-08-19/halep-vs-makarova-new-haven-qf?utm_source=cite (as of 19 August 2013).