If it takes a village to raise a child, then the modern tennis tour increasingly requires a significant entourage.

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.

Another week, another early exit for Emma Raducanu – and the inconsistency of her performances underlines the need for her to appoint a coach.