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Hradecka was pushed especially hard in the second set of her 63 76(8) defeat of No.7 seed Tamira Paszek. The Czech trailed 5-3 and had two set points against her at 5-4 and then another in the tie-break, but rallied and punctuated the match with her 10th ace. The pair's only other meeting also came in Luxembourg, a qualifying match two years ago also won by Hradecka.
Also winning a tight two-setter was Magdalena Rybarikova, 76(2) 64, over eighth-seeded Carla Suárez Navarro. The Spaniard served for the first set at 5-4, but Rybarikova won eight of the next 10 games to seize control en route to victory. Rybarikova came into Luxembourg having lost four of five matches, including her opener just last week against of all players - Suárez Navarro.
Monica Niculescu came into this week having lost eight of nine matches. However, the Romanian showed off some of the form that saw her reach her only WTA final here last year with a 76(4) 61 win over Romina Oprandi.
Among those in action Tuesday are Roberta Vinci, Julia Goerges, Venus Williams and Jelena Jankovic. Vinci was the Luxembourg champion in 2010. Goerges is fresh off her second final of the year in Linz. Williams is playing her first match since the US Open against 15-year-old wildcard Belinda Bencic, who is making her WTA main draw debut after winning her last two ITF Women's Circuit events. Jankovic has a compelling match-up against Peng Shuai, as she is 6-3 against the Chinese, but has lost three straight.
"It's going to be a tough match," Jankovic said. "In Cincinnati this summer, I lost 7-6 in the third after having many match points against her. Every match is different. I have to try to play my game and learn from the mistakes I made last time. We'll see how it goes.
"It's the last tournament for most of us. I'd like to go far. I have been in two finals this year. I hope to win this one."