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·Masters·HardSimona Waltert defeated Petra Marcinko 5-7, 6-4, 6-2 — Cincinnati Open 2026 R128.
Simona Waltert and Petra Marcinko: Simona Waltert leads 1–0 across 1 recorded meeting.
The margin lived entirely on the break points. Waltert took four of her eight chances while Marcinko, whom the betting market had installed as a 53 percent favorite, converted two of 11, and the points ledger closed 101-100 across 201 played. Down a break in the decider, the WTA No. 90 broke back in game 5 for 2-3 and went through again in game 7 for 4-3, winning 77 percent of her first-serve points in that set to Marcinko's 69. Two hours and 26 minutes on court ended a six-match losing run dating to May, and the Cincinnati Open loses the WTA No. 53 at the first hurdle.