Holders France, the US and Belgium were comfortable first-round winners in the Fed Cup on Sunday.
Amelie Mauresmo gave France, 2-0 up overnight, victory in the best-of-five encounter against Germany in Amiens with an easy 6-2, 6-3 win over French Open junior champion Anna Lena Groenefeld in the day's opening singles.
Emilie Loit won the remaining singles and France wrapped up a 5-0 thrashing with victory in the doubles.
In July's quarter-finals the holders face Italy or the Czech Republic, whose tie in Lecce would resume yesterday after being halted due to rain with the Italians 2-1 ahead.
The US lost their opening rubber against Slovenia in Portoroz on Saturday but Venus Williams pulled them level and she beat Tina Pisnik 6-3, 6-1 on Sunday.
Later in the day, Lisa Raymond gave them a decisive 3-1 lead by winning 5-7, 6-3, 6-4 against Katarina Srebotnik.
Martina Navratilova, 47, wrapped up a 4-1 triumph by partnering Raymond to victory in the dead doubles rubber.
The US face Austria, who beat Slovakia 3-2 in St Poelten, in the last eight.
Belgium 3, Croatia 2
In Bree, Belgium's world number two Kim Clijsters chalked up her second win in two days following her return from a recurrent wrist injury by hammering Croatia's Karolina Sprem 6-1, 6-3.
Team mate Els Callens secured Belgium's 3-2 win with a 6-2, 3-6, 6-4 win over Jelena Kostanic in the penultimate rubber.
Belgium will play Spain in the quarterfinals after 32-year-old Conchita Martinez, who also won both her singles matches, teamed up with Virginia Ruano Pascual to win the decisive doubles in their 3-2 win over Switzerland in La Manga.
Russia, semifinalists last year, beat Australia 4-1 to set up a quarterfinal clash with Argentina who easily beat Japan.
Vera Zvonareva clinched the tie for the Russians in Moscow by trouncing Samantha Stosur 6-2 6-3 in less than an hour.
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