Highlights of the fifth day at the US Open at Flushing Meadows on Thursday (times GMT):1643 HADDAD MAIA SETS UP SAKKARI CLASHLast year's quarter-finalist and Brazilian 18th seed Beatriz Haddad Maia beat Switzerland's Viktorija Golubic 6-1 6-4 to set up a third-round clash with Greek former semi-finalist Maria Sakkari.1503 PLAY UNDER WAYPlay began under partly cloudy skies in New York, with the temperature around 23 degrees Celsius (73 degrees Fahrenheit).READ MOREPREVIEW: Sinner faces Popyrin challenge, Gauff struggles with revamped serve at US OpenBillie Jean King backs revamped US Open mixed doublesAlcaraz exorcises second-round demons, Djokovic recovers from slow start at US OpenSabalenka sees off Kudermetova to reach third round in New YorkAlcaraz cruises into third round with commanding win over BellucciMedvedev fined $42,500 for US Open anticsTownsend, Ostapenko involved in heated exchange at US OpenDjokovic battles, Raducanu romps through US Open second roundDjokovic wrestles with 'riddle' of unlocking his best at US OpenResurgent Raducanu breezes past Tjen to reach US Open third roundRaducanu backs Alcaraz's bold new cut at US OpenDjokovic overcomes ailing American qualifier in US Open second roundBriton Draper withdraws from US Open with niggling arm injuryU.S. OPEN ORDER OF PLAY ON THURSDAY (prefix number denotes seeding)ARTHUR ASHE STADIUM (1530 GMT/1130 AM ET)Suzan Lamens (Netherlands) v 2-Iga Swiatek (Poland)1-Jannik Sinner (Italy) v Alexei Popyrin (Australia)Donna Vekic (Croatia) v 3-Coco Gauff (U.S.)Nuno Borges (Portugal) v 14-Tommy Paul (U.S.)LOUIS ARMSTRONG STADIUM (1500 GMT/11 AM ET)10-Lorenzo Musetti (Italy) v David Goffin (Belgium)Hailey Baptiste (U.S.) v 23-Naomi Osaka (Japan)3-Alexander Zverev (Germany) v Jacob Fearnley (Britain)9-Amanda Anisimova (U.S.) v Maya Joint (Australia)