Zheng Qinwen fired 13 aces to ease into the quarter-finals of the Athens Open, reaching her first tour-level quarter-final in a year, while expressing her desire to become a more well-rounded player. The Paris Olympics champion cruised past Australia’s Elena Micic 6-4, 6-1 in the second round of the WTA 250 event in the early hours of Thursday, lifting her up the WTA rankings to No 121. Zheng, who needs to win the tournament in Greece to qualify for the main draw of the coming US Open, will face...