MELBOURNE, JANUARY 28

Jannik Sinner's first Grand Slam title with a comeback from two sets down to beat Daniil Medvedev completed the first 15-day Australian Open on the third Sunday of the tournament. Here's a guide that tells you everything you need to know:

KEY RESULTS SUNDAY?

Men's singles championship: No. 4 Jannik Sinner beat No. 3 Daniil Medvedev 3-6, 3-6, 6-4, 6-4, 6-3.

Women's doubles championship: No. 2 Hsieh Su-wei and Elise Mertens beat No. 11 Lyudmyla Kichenok and Jelena Ostapenko 6-1, 7-5.

GET CAUGHT UP

What to read about the Australian Open:

Jannik Sinner comes back from two sets down to take the Australian Open final from Daniil Medvedev

Aryna Sabalenka wins back-to-back titles in Australia

Jannik Sinner making his mark with a run to the Australian Open final

A TENNIS QUIZ

Try your hand at the AP's Australian Open quiz.

STATS TO KNOW

Sinner wins his first Grand Slam title in his first major final.

Medvedev is the first finalist to play four five-set matches in a Grand Slam tournament.

Medvedev's court time through seven rounds is a Grand Slam Open era record.

1,020,763 - a record total crowd for the Australian Open main draw. The extra day helped. The previous record for a 14-day tournament was 839,192 last year.

WORDS TO KNOW

'Yes, I like to dance in the pressure storm. I like it, because that's where most of the time I bring out my best tennis.' - Sinner.

'It's very, very tough when you have a mentality, I don't want to say champion, but a good mentality, a sport mentality, it's very tough to lose in the final. It kind of hurts more. But you have to try to find positives - and the positive is, well, the final is better than the semifinal and quarters.' - Medvedev.