San Diego Open: Duckworth makes quarter-finals

Australian James Duckworth, the No 7 seed, reached the quarter-finals of the San Diego Open by defeating American qualifier Mitchell Krueger 6-3, 7-6 (4) at the Barnes Tennis Centre on Thursday night. Duckworth, ranked No 83, will play the winner of the match between American Marcos Giron, the No 3 seed, and Argentinian Tomas Martin Etcheverry next. The Australian won against Ale