Emma Raducanu said she was not too pleased with the level she displayed in her 6-2 6-4 defeat to Zheng Qinwen at the Queen's Club Championships on Friday, but the Briton dismissed any fears of a serious back injury. In an entertaining battle, Raducanu had a few bright moments and secured a double break to go 3-0 up in the second set after taking a medical timeout for a back issue, but she was eventually overpowered by the Chinese world number five. "I've played five matches in a pretty short