FormerworldnumberoneNovakDjokovicrevealedFridaythathehasundergone"asmallmedicalintervention"inanattempttocurehislong-standingrightelbowinjury.The12-timeGrandSla
The30-year-old,seeded14thaftermissingthesecondhalfof2017withanelbowinjury,won6-16-26-4.Heusedaremodelledserviceactiondesignedtotakepressureoffhiselbow,andhedrop