In Pictures: Day 4 at the French Open

epa03722877 Roger Federer of Switzerland serves during his second round match against Somdev Devvarman of India at the French Open tennis tournament at Roland Garros in Paris, France, 29 May 2013. EPA/CHRISTOPHE KARABA *** Local Caption *** 03722877.jpg

The day also belonged to another former No 1 - Caroline Wozniacki - as the Danish player beat Serbia's Bojana Jovanovski 7-6, 6-3. Getty Images

Gulbis looked good to win throughout the match, even taking a set off Monfils. But one of France's top players knew how to close out the sets. Martin Bureau / AFP

The French Open continues to be a haven for Spanish tennis players. They just love the clay there. Nicolas Almagro certainly did yesterday when he thrashed Edouard Roger-Vasselin in straight sets. Patrick Kovarik / AFP

Federer's single-handed backhand - a rarity in men's tennis these days - came to good use yesterday during the Swiss player's domination over Somdev Devvarman. Thomas Coex / AFP

The French Open has had a few altercations and heated exchanges. Here, Sergiy Stakhovsky, left, argues with the umpire after a point against France's Richard Gasquet. Nothing came of it as Frenchman won in straight sets anyway. Patrick Kovarik / AFP

Italy's Sara Errani continued her claycourt domination, beating Yulia Putintseva, of Kazakhstan, in the second round. Errani won 6-1, 6-1. Miguel Medina / AFP

Of course, Wozniacki would have required a nice comb to get her hairdo right after the win. Vincent Kessler / Reuters

At least one French hope was dashed when Caroline Garcia got a thrashing from Serena Williams. Little-known Garcia lost 6-1, 6-2. A normal day out for the world's best player. Gonzalo Fuentes / Reuters

Serena has been moving well on the clay of Paris so far. The 2002 champion is into the third round. Gonzalo Fuentes / Reuters

The American is determined to create a legacy for herself at Roland Garros by collecting more trophies here, and she seems to be on the right track. Gonzalo Fuentes / Reuters

Putintseva served well against Errani but it was not enough yesterday. Stephane Mahe / Reuters