PARIS — A point from losing the first set of his French Open quarterfinal, Roger Federer shanked a routine forehand, sending the ball 10 feet beyond the opposite baseline. The Court Philippe Chatrier crowd roared with approval, then loudly chanted the last name of Federer's opponent, Frenchman Jo-Wilfried Tsonga. That shot was a clear indication that Federer was hardly Federesque on this day.