AUSTRALIA OPENOops! Serena does about-turn during world's No.1 announcementThe North American tennis star realized the announcement was being made for Simona Halep, not her, and quickly did an about-turn.AStvUpdate: Jan 21st, 2019 15:08 EST0Tagged in:Serena WilliamsSimona HalepOpen AustraliaGrand SlamTenisCompeticionesDeportes