After taking a 2 - 0 lead in the second set , Zvonareva played two back - to - back poor service games .
After taking a 2 - 0 lead in the second set , Zvonareva relinquished a break to Spain 2 - 4 .
After taking a 2 - 0 lead in the second set , Zvonareva played two back - to - back poor service games and relinquished a break to Spain 2 - 4 .