Juan Martin del Potro wins the Estoril Open . Beats Richard Gasquet 6 - 3 , 6 - 2 . Philipp Marx wins in Munich . Tennis shifts to Wimbledon , where blue balls will be used for first time .
Juan Martin del Potro wins the Estoril Open . Beats Richard Gasquet 6-4 , 6-2 . Philipp Kohlschreiber wins in Munich . Focus shifts to Madrid , where blue clay will be used for first time .