Radwanska's shock exit

World number four Tomas Berdych eased into the French Open second round Monday as heavyweights Maria Sharapova and Andy Murray waited to make their 2015 Roland Garros bows.

But there was more Paris misery for ex-world number two and former Wimbledon runner-up Agnieszka Radwanska, who was a shock first-round loser.

Berdych, a 2010 semifinalist, continued his solid claycourt season with a 6-0, 7-5, 6-3 win over Japanese qualifier Yoshihito Nishioka, the world number 146.

The 29-year-old Berdych will face Davis Cup-winning teammate Radek Stepanek, the oldest man in the draw at 36, for a place in the last 32.

Stepanek became the oldest man to win a match at Roland Garros since 38-year-old Jimmy Connors in 1991 when he saw off Croatian journeyman Ivan Dodig 5-7, 6-3, 6-4, 6-1.

Spain's 11th seed Feliciano Lopez was the biggest men's casualty so far on the day when he lost to Russian world number 74 Teymuraz Gabashvili, 6-3, 7-6 (11/9), 6-3.

In the women's event, Spanish eighth seed Carla Suarez Navarro, a quarter-finalist in 2008 and 2014, beat Romania's Monica Niculescu 6-2, 6-2.

But Polish 14th seed Radwanska went down 6-2, 3-6, 6-1 to Germany's Annika Beck.

The defeat was only the third time in 34 Grand Slam tournaments that 26-year-old Radwanska had lost in the first round.

There were home wins for French 29th seed Alize Cornet, who defeated Roberta Vinci 4-6, 6-4, 6-1 for her first victory over the veteran Italian in five attempts, and wildcard Amandine Hesse, ranked 272, who hit back to beat Australia's Jarmila Gajdosova 2-6, 6-3, 6-2.

Hesse's reward is a second-round match-up with 2010 runner-up Samantha Stosur, the winner in Strasbourg at the weekend, who defeated Madison Brengle of the United States 6-1, 6-3.

Virginie Razzano, playing in her 17th French Open, edged out Paraguay's Veronica Cepede Royg 2-6, 6-4, 6-2.

Kerber, a quarter-finalist in 2012, brushed asided Timea Babos of Hungary 6-0, 6-1.