Serena Williams continues her protracted pursuit of a record-equalling 24th singles Grand Slam title on day two of the US Open at Flushing Meadows on Tuesday.
It has been more than three years since Williams won her 23rd Grand Slam title at the 2017 Australian Open - when she was already pregnant with daughter Olympia.
The 38-year-old has come close since, reaching four major finals only to come away empty handed.
She needs one more to equal Margaret Court's record and starts her latest bid against the 96th-ranked Kristie Ahn at Arthur Ashe Stadium on Tuesday afternoon.
Williams's chances of matching Court, and breaking out of a tie with Chris Evert for most US Open women's titles with six, should be improved by the absence of several top players because of coronavirus concerns or injury.
World number one Ashleigh Barty, the second-ranked Simona Halep and Canadian Bianca Andreescu - who stunned Williams in last year's final - are all absent from the behind-closed doors tournament.
Also up on Tuesday is former men's world No 1 and 2012 US Open champion Andy Murray.
The Scotsman, who is battling back from a string of injuries that have ravaged the past three years of his career, takes on Japan's Yoshihito Nishioka.
The men's second and third seeds, Dominic Thiem and Daniil Medvedev respectively start their quests for a first Grand Slam title on Tuesday.
They are high up in the draw due to the absence of Rafael Nadal, over coronavirus fears, and Swiss legend Roger Federer due to injury.
In the women's competition, second seed Sofia Kenin takes on Yanina Wickmayer of Belgium and in a "Battle of Britain" contest ninth seed Johanna Konta is up against Heather Watson.
Results from opening day of US Open tennis championship in New York on Monday (x-denotes seed):
Men's singles
First round
Novak Djokovic (SRB x1) bt Damir Dzumhur (BIH) 6-1, 6-4, 6-1
Kyle Edmund (GBR) bt Alexander Bublik (KAZ) 2-6, 7-5, 7-5, 6-0
Jan-Lennard Struff (GER x28) bt Pedro Martinez (ESP) 6-0, 7-5, 6-4
Pablo Carreno-Busta (ESP x20) bt Yasutaka Uchiyama (JPN) 4-6, 6-3, 1-6, 6-3, 6-3
Mitchell Krueger (USA) bt Pedro Sousa (POR) 3-6, 6-2, 7-5, 6-3
Ricardas Berankis (LTU) bt Federico Gaio (ITA) 7-6 (7/3), 4-6, 6-4, 6-4
Steve Johnson (USA) bt John Isner (USA x16) 6-7 (5/7), 6-3, 6-7 (5/7), 6-3, 7-6 (7/3)
Denis Shapovalov (CAN x12) bt Sebastian Korda (USA) 6-4, 4-6, 6-3, 6-2
Soonwoo Kwon (KOR) bt Thai-Son Kwiatkowski (USA) 3-6, 7-6 (7/4), 6-1, 6-2
Gilles Simon (FRA) bt Mohamed Safwat (EGY) 6-1, 6-4, 6-4
Taylor Fritz (USA x19) bt Dominik Koepfer (GER) 6-7 (7/9), 6-3, 6-2, 6-4
Filip Krajinovic (SRB x26) bt Mikael Ymer (SWE) 6-2, 7-6 (7/3), 6-3
Marcos Giron (USA) bt Marc Polmans (AUS) 6-4, 6-7 (5/7), 3-6, 6-4, 6-2
Lloyd Harris (RSA) bt Marco Cecchinato (ITA) 6-4, 7-5, 6-2
David Goffin (BEL x7) bt Reilly Opelka (USA) 7-6 (7/2), 3-6, 6-1, 6-4
Stefanos Tsitsipas (GRE x4) bt Albert Ramos (ESP) 6-2, 6-1, 6-1
Maxime Cressy (USA) bt Jozef Kovalik (SVK) 6-1, 2-6, 6-4, 6-4
Juan Ignacio Londero (ARG) bt Evgeny Donskoy (RUS) 6-3, 6-3, 7-5
Borna Coric (CRO x27) bt Pablo Andújar (ESP) 7-5, 6-3, 6-1
Egor Gerasimov (BLR) bt Dusan Lajovic (SRB x18) 6-1, 4-6, 6-4, 6-4
Jordan Thompson (AUS) bt Stefano Travaglia (ITA) 6-3, 6-4, 4-6, 6-2
Mikhail Kukushkin (KAZ) bt Attila Balazs (HUN) 6-4, 7-5, 6-4
Christian Garín (CHI x13) bt Ulises Blanch (USA) 4-6, 5-7, 6-4, 6-4, 6-2
Cameron Norrie (GBR) bt Diego Schwartzman (ARG x9) 3-6, 4-6, 6-2, 6-1, 7-5
Federico Coria (ARG) bt Jason Jung (TPE) 2-6, 4-6, 6-4, 6-1, 2-0 abandon
Alejandro Davidovich (ESP) bt Dennis Novak (AUT) 3-6, 6-4, 6-3, 1-6, 6-0
Hubert Hurkacz (POL x24) bt Peter Gojowczyk (GER) 6-3, 6-4, 6-4
Adrian Mannarino (FRA x32) bt Lorenzo Sonego (ITA) 6-1, 6-4, 2-6, 6-3
Jack Sock (USA) bt Pablo Cuevas (URU) 3-6, 6-4, 6-2, 4-6, 7-6 (7/2)
Brandon Nakashima (USA) bt Paolo Lorenzi (ITA) 6-3, 6-2, 7-6 (7/3)
Alexander Zverev (GER x5) bt Kevin Anderson (RSA) 7-6 (7/2), 5-7, 6-3, 7-5
Women's singles
First round
Karolina Pliskova (CZE x1) bt Anhelina Kalinina (UKR) 6-4, 6-0
Caroline Garcia (FRA) bt Jasmine Paolini (ITA) 6-3, 6-2
Catherine Bellis (USA) bt Tamara Korpatsch (GER) 6-7 (13/15), 6-3, 6-2
Jennifer Brady (USA x28) bt Anna Blinkova (RUS) 6-3, 6-2
Angelique Kerber (GER x17) bt Ajla Tomljanovic (AUS) 6-4, 6-4
Anna-Lena Friedsam (GER) bt Caroline Dolehide (USA) 6-2, 6-2
Ann Li (USA) bt Arantxa Rus (NED) 6-4, 2-6, 6-1
Alison Riske (USA x13) bt Tatjana Maria (GER) 6-3, 6-2
Marketa Vondrousova (CZE x12) bt Greet Minnen (BEL) 6-1, 6-4
Aliaksandra Sasnovich (BLR) bt Francesca Di Lorenzo (USA) 2-6, 7-6 (8/6), 6-0
Vera Lapko (BLR) bt Viktorija Golubic (SUI) 1-6, 7-6 (7/2), 6-2
Yulia Putintseva (KAZ x23) bt Robin Montgomery (USA) 6-1, 6-3
Kristina Mladenovic (FRA x30) bt Hailey Baptiste (USA) 7-5, 6-2
Varvara Gracheva (RUS) bt Paula Badosa (ESP) 6-4, 7-5
Kateryna Bondarenko (UKR) bt Alexandra Kiick (USA) 3-6, 6-3, 6-1
Petra Martic (CRO x8) bt Tereza Martincova (CZE) 5-7, 6-2, 6-4
Naomi Osaka (JPN x4) bt Misaki Doi (JPN) 6-2, 5-7, 6-2
Camila Giorgi (ITA) bt Alison Van Uytvanck (BEL) 2-6, 6-1, 7-5
Marta Kostyuk (UKR) bt Darya Kasatkina (RUS) 6-1, 6-2
Anastasija Sevastova (LAT x31) bt Cori Gauff (USA) 6-3, 5-7, 6-4
Magda Linette (POL x24) bt Maddison Inglis (AUS) 6-1, 4-6, 6-4
Danka Kovinic (MNE) bt Lizette Cabrera (AUS) 6-4, 3-6, 6-2
Kaja Juvan (SLO) bt Usue Arconada (USA) 6-4, 7-6 (7/2)
Anett Kontaveit (EST x14) bt Danielle Collins (USA) 5-7, 6-2, 6-2
Elena Rybakina (KAZ x11) bt Katarina Zavatska (UKR) 6-3, 6-0
Shelby Rogers (USA) bt Irina Khromacheva (RUS) 6-2, 6-2
Madison Brengle (USA) bt Arina Rodionova (AUS) 6-2, 6-2
Dayana Yastremska (UKR x19) bt Astra Sharma (AUS) 6-3, 6-7 (4/7), 7-6 (7/2)
Kirsten Flipkens (BEL) bt Rebecca Peterson (SWE x32) 7-6 (7/1), 6-4
Kateryna Kozlova (UKR) bt Whitney Osuigwe (USA) 6-3, 7-5
Petra Kvitova (CZE x6) bt Irina Begu (ROU) 6-3, 6-2