STUTTGART, Germany, April 23 (UPI) -- Eighth-seeded Nadia Petrova toughed out a first-round win Tuesday during play at the Porsche Tennis Grand Prix in Germany.
Petrova, 11th in the world rankings, got by world No. 150 Dinah Pfizenmaier 7-6 (7-2), 6-4. Petrova managed the only break of the second set, saving the two break points she faced. She ended up winning 71 percent of the points on serve.