Juan Ignacio Chela is the 8th player to retire this year following Fernando Gonzalez, Ivan Ljubicic, Andy Roddick, Kim Clijsters, Rainer Schuettler, Juan Carlos Ferrero and Gisela Dulko.
Question marks remain over Robin Soderling, Mardy Fish and possibly Gael Monfils.
Has this year been a record for player retirements?
Andy Murray: "In front of the cameras I'm a little bit shy. When the cameras are off I'm a different person."