Roger Federer wins opening match at Halle Open in Germany . The 17-time grand slam winner yet to pick up a title this year . Federer will face world number one Lleyton Hewitt shocks Grigor Dimitrov at Queen 's Club .
Roger Federer wins opening match at Halle Open in Germany . The 17-time grand slam winner yet to pick up a title this year . Gael Monfils withdraws from Wimbledon for personal reasons . Lleyton Hewitt shocks Grigor Dimitrov at Queen 's Club .