World number 30 Berrettini saved five points in the marathon second set tiebreak and held on to win it 13-11 for his third ATP crown in last 11 months.
Rafael Nadal left German qualifier Yannick Maden no hope as he booked his ticket for the third round of the French Open in ruthless fashion with a 6-1, 6-2, 6-4 victory.
World number five Alexander Zverev continued his poor recent form as he crashed out of the Italian Open in the second round while Serena Williams had to pull out of the women's draw with a recurring knee injury.
Top seed Simona Halep came back from 4-1 down in the deciding set to beat Elina Svitolina 6-3 3-6 6-4 in the Qatar Open semi-final on Friday, marking her first victory over the Ukrainian in nearly two years.
Summary of sports events and persons who made news on Sunday
India ended its campaign at the Fed Cup with a fourth place finish after losing the classification tie 1-2 to Korea as the team badly missed injured Karman Kaur Thandi, who did not play on Saturday, in Astana, Kazakhstan.
List of Australian Open men's singles champions since the event began in 1905 (Australian unless stated):
A look at the records of Spain's Rafael Nadal and Serbia's Novak Djokovic before their title clash at the Australian Open on Sunday (prefix number denotes seeding):
A win for Djokovic would move him past Pete Sampras (14) to outright third on the list of Grand Slam title winners.
A rampant Novak Djokovic completed a stunning 6-0, 6-2, 6-2 demolition of Lucas Pouille, on Friday, to storm into his seventh Australian Open final and set up a mouthwatering title match with Rafael Nadal.
Confident Shapovalov primed to step up against Djokovic
Images from the Australian Open in Melbourne on Thursday.
Eleven years after their first meeting in the Australian Open final, Novak Djokovic and Jo-Wilfried Tsonga will take a trip down memory lane on Thursday to renew their rivalry in the second round in Melbourne.
IMAGES from the Australian Open on Tuesday.
amiliar names, however, are tipped to take off with the winners' trophies. The following is a list of talking points at the Australian Open:
Novak Djokovic's star still burns bright as he returns to Melbourne Park in search of a record seventh Australian Open title.
The draw for the first Grand Slam of the season was made on Thursday and the top seeds could face some early tests of their credentials when play gets underway in Melbourne on Monday.
Summary of sports events and persons who made news on Saturday
Summary of sports events and persons who made news on Friday
Lucky loser Taro Daniel will replace Nadal in the second round against Jo-Wilfried Tsonga.
Nicolas Mahut and Pierre-Hugues Herbert made sure of that with a gripping doubles win that keeps France's hopes against Croatia alive in the last final to be staged in the event's traditional format.
Jo Wilfried Tsonga defied doctor's orders to continue his match against Marin Cilic in the Davis Cup final on Friday, although it was all in vain as he slumped to a straight-sets defeat.
Borna Coric and Marin Cilic put Croatia in complete control of the Davis Cup final on Friday, leaving hosts and defending champions France facing what looks like mission impossible.
Already without the likes of Richard Gasquet and Gael Monfils for the final against Croatia, Noah decided to leave out Lucas Pouille, the top-ranked player in his squad.
World No 2 Djokovic, who received a first-round bye, broke his opponent's serve four times to extend his winning run to 19 matches.
The new-look Davis Cup, masterminded by Barcelona footballer Gerard Pique, has the potential to rival golf's Ryder Cup as a sporting spectacle, the tennis competition's organisers say.
Frenchman Jo-Wilfried Tsonga has withdrawn from the US Open due to a long-term knee problem, the United States Tennis Association said on Monday.
Novak Djokovic claimed a fourth Wimbledon title in ruthless fashion as he beat giant South African Kevin Anderson 6-2, 6-2, 7-6(3) in the final.
Canadian teenager Denis Shapovalov believes his first season on the ATP Tour has helped him grow into a better player and he is relishing the challenges ahead.
A summary of sports events and sports persons who made news on Sunday.
A summary of sports events and sports persons, who made news on Friday.
List of Australian Open men's singles champions since the event began in 1905 (Australian unless stated):
South Korean president Moon Jae-in has backed Chung Hyeon to bring more joy to his country after the youngster's inspired charge at the Australian Open came to a heart-breaking end in the semi-finals on Friday.
Nick Kyrgios's Australian Open ended with a gallant fourth round defeat by an inspired Grigor Dimitrov on Sunday but the maverick talent leaves Melbourne Park after winning over a nation.
Bulgarian Grigor Dimitrov kept cool in the Rod Laver Arena maelstrom to knock home favourite Nick Kyrgios out of the Australian Open in a fourth-round thriller on Sunday.
Nick Kyrgios toppled his childhood idol Jo-Wilfried Tsonga to bury his Rod Laver Arena hoodoo and reach the fourth round of his home Australian Open on Friday.
Images from matches played on Day 5 at the Australian Open in Melbourne Park on Friday
Local hope Nick Kyrgios has been elevated to the Rod Laver Arena for his meeting with childhood hero Jo-Wilfried Tsonga at the Australian Open on Friday, when Melbourne Park is again expected to swelter.
Nick Kyrgios must not let playing on Rod Laver Arena douse his natural fire when he plays Jo-Wilfried Tsonga in the standout match of the Australian Open third round on Friday, according to former champion Mats Wilander.
Images from the Australian Open matches played at Melbourne Park on Wednesday.