Serena Williams' ex-coach tells Emma Raducanu what she really needs
Serena Williams' childhood coach Rick Macci suggests that Emma Raducanu should turn to a biomechanics coach to help her fix but also improve her serve. On Tuesday, the world No. 56 disappointingly exited the Abu Dhabi Open in the first round after picking up a 3-6 4-6 defeat to Marketa Vondrousova.