Dominating on the squash courts, David beat Natalie Grinham to win her third consecutive Singapore Masters championship, and her third title within a month. She overcame Natalie in three sets with a score of 11–9, 11–8 and 11–9 for her fifth WISPA title of the year. David celebrated another milestone in her squash career by moving into her 41st month as world number one in the September Women's World Rankings thus surpassing her mentor Sarah Fitz-Gerald as the player with the third longest ever reign at the top of the women's rankings. On 12 September, David lost to Madeline Perry in the British Open quarter-final in a five set match that lasted for 76 minutes; 15 days later, she recovered to defeat arch-rival Natalie Grinham in the final of the World Open Championship, obtaining the title for a record fourth time. David ended the year on a low when she lost in the semis to Jenny Duncalf in both the Qatar Classic and the US Open, the former ending in five sets.