A scoring error in the second set gave Flavio Cobolli a crucial advantage, allowing him to break Stan Wawrinka’s serve and ultimately secure a 6-7(6), 7-6(4), 6-3 victory in the Shanghai Masters second round. The mistake, which went unnoticed by both players and officials, gave Cobolli a 2-0 lead in the third set, setting him up for a victory against the three-time Grand Slam champion.