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.

If your opponent fails to return the ball back over the net to you, you win the point. You can play with two people (one-on-one), or with four (two-on-two) on different surfaces, including grass, hard court, carpet and clay.

Britain's new No1 Emma Raducanu has crashed out of Queen's Club, falling 6-2 6-4 to Olympic champion and top seed Qinwen Zheng in the quarter-finals. The promising Briton held a commanding position in the second set,