$ 0 0 Latvia's Ernests Gulbis celebrates his victory over Switzerland's RogerFederer at the end of their French tennis Open round of sixteen match against at the Roland Garros stadium, in Paris, on June 1, 2014.Latvia's Ernests Gulbis (R) shakes hands with Switzerland's RogerFederer at the end of their French tennis Open round of sixteen match against at the Roland Garros stadium, in Paris, on June 1, 2014.Ernests Gulbis of Latvia acknowledges spectators after winning his men's singles match against RogerFederer of Switzerland at the FrenchOpen tennis tournament at the Roland Garros stadium in Paris, on June 1, 2014. Ernests Gulbis runs to the net as he plays Switzerland's RogerFederer during their fourth round match of the FrenchOpen tennis tournamen, in Paris, on June 1, 2014.Ernests Gulbis clenches his fist as he plays Switzerland's RogerFederer during their fourth round match of the FrenchOpen tennis tournament, in Paris, France, on June 1, 2014. RogerFederer looks down as he plays Latvia's Ernests Gulbis during their fourth round match of the FrenchOpen tennis tournament at the Roland Garros stadium, in Paris, France, on June 1, 2014.Latvia's Ernests Gulbis waves after defeating Switzerland's RogerFederer during their fourth round match of the FrenchOpen tennis tournament at the Roland Garros stadium, in Paris, France, on June 1, 2014. Switzerland's RogerFederer reacts after losing a point during his French tennis Open round of sixteen match, in Paris, on June 1, 2014.Switzerland's RogerFederer (R) shakes hands with Latvia's Ernests Gulbis at the end of their French tennis Open round of sixteen match against at the Roland Garros stadium in Paris, on June 1, 2014. Switzerland's RogerFederer reacts after losing a point against Latvia's Ernests Gulbis during their French tennis Open round of sixteen match against at the Roland Garros stadium in Paris, on June 1, 2014.