MELBOURNE, Australia — A quick look at the Australian Open:

TUESDAY TV (all times Eastern): Replay of Monday action, 2-5 p.m. (ESPN2); Live Tuesday matches on Tennis Channel, 7-9 p.m.; ESPN2, 9 p.m.-7 a.m. or conclusion 

LOOKAHEAD TO TUESDAY

It's a big second day at Melbourne Park with Novak Djokovic beginning his quest for a seventh Australian Open title and 15th Grand Slam singles championship. Serena Williams, after missing last year's tournament, has won seven titles at Melbourne Park and 23 Grand Slam singles championships overall. Naomi Osaka, who beat Williams in a controversial final at the U.S Open last year, also plays her first match as well at top-seeded Simona Halep. Djokovic plays in the first night match on Rod Laver Arena against American qualifier Mitchell Krueger, Serena Williams has the second day match on the same court against Tatjana Maria and Osaka plays Magda Linette following the Djokovic match. Halep plays Kaia Kanepi. Other men's seeds of note are No. 4 Alexander Zverev and No. 8 Kei Nishikori, while Venus Williams plays 25th-seeded Mihaela Buzarnescu.

TUESDAY'S FORECAST

Partly cloudy. High of 36 degrees Celsius (97 Fahrenheit)

MONDAY'S WEATHER

Sunny. High of 32 Celsius (89 Fahrenheit)

MONDAY'S KEY RESULTS

Men's 1st round: No. 2 Rafael Nadal beat James Duckworth 6-4, 6-3, 7-5; No. 3 Roger Federer beat Denis Istomin 6-3, 6-4, 6-4; No. 5 Kevin Anderson beat Adrian Mannarino 6-3, 5-7, 6-2, 6-1; No. 6 Marin Cilic beat Bernard Tomic 6-2, 6-4, 7-6 (3); Reilly Opelka beat No. 9 John Isner 7-6 (4), 7-6 (6), 6-7 (4), 7-6 (5); No. 22 Roberto Bautista Agut beat Andy Murray 6-4, 6-4 6-7 (5), 6-7 (4), 6-2.

Women's 1st round: No. 2 Angelique Kerber beat Polona Hercog 6-2, 6-2; No. 3 Caroline Wozniacki beat Alison Van Uytvanck 6-3, 6-4; No. 5 Sloane Stephens beat Taylor Townsend 6-4, 6-2; No. 8 Petra Kvitova beat Magdalena Rybarikova 6-3, 6-2; No. 30 Maria Sharapova beat Harriet Dart 6-0, 6-0.

STAT OF THE DAY

11 — number of years since Murray lost a first-round match at a Grand Slam tournament (at Melbourne Park in 2008 to Jo-Wilfried Tsonga).

QUOTE OF THE DAY

"If this was my last match ... I gave literally everything I had. It wasn't enough tonight" — Murray on the likelihood that his loss to Bautista Agut will be his final one at Melbourne Park.

TUESDAY SHOWCOURT SCHEDULE

At Melbourne Park

Melbourne

Rod Laver Arena

Destanee Aiava, Australia, vs. Madison Keys (17), United States

Tatjana Maria, Germany, vs. Serena Williams (16), United States

Alexander Zverev (4), Germany, vs. Aljaz Bedene, Slovenia

Novak Djokovic (1), Serbia, vs. Mitchell Krueger, United States

Naomi Osaka (4), Japan, vs. Magda Linette, Poland

Margaret Court Arena

Kamil Majchrzak, Poland, vs. Kei Nishikori (8), Japan

Tamara Zidansek, Slovenia, vs. Daria Gavrilova, Australia

Venus Williams, United States, vs. Mihaela Buzarnescu (25), Romania

Simona Halep (1), Romania, vs. Kaia Kanepi, Estonia

Benoit Paire, France, vs. Dominic Thiem (7), Austria

Melbourne Arena

Karolina Muchova, Czech Republic, vs. Karolina Pliskova (7), Czech Republic

Borna Coric (11), Croatia, vs. Steve Darcis, Belgium

Laura Siegemund, Germany, vs. Victoria Azarenka, Belarus

Samantha Stosur, Australia, vs. Dayana Yastremska, Ukraine

Nick Kyrgios, Australia, vs. Milos Raonic (16), Canada