Australian Open: Day 6

John Isner beat Feliciano Lopez of Spain 6-7 7-6 6-4 6-2 in his third round match

After play resumed in the match, Ana Ivanovic lost her match 6-4 4-6 4-6 to Madison Keys of USA

Victoria Azarenka sailed into the 4th round with a 6-1 6-1 win over Naomi Osaka of Japan

Garbine Muguruza lost her Round 3 match to Barbora Strycova 6-3 6-2

The Women's Singles match between Ana Ivanovic and Madison Keys has been suspended after the former 's coach Nigel Sears collapsed during the second set

This sees Kyrgios' run at the Australian Open end entirely; he bowed out of the men's doubles with partner Omar Jasika yesterday.

Cilic and Berdych have met at Slams before - at Wimbledon in 2014, and the US Open later that same year, with Cilic winning each time.

6th seed Berdych is lined up for a fourth-round match against Spain's Roberto Bautista Agut, who pulled off an upset over Marin Cilic earlier in the evening.

Criticizing the umpire's line calls, he also took issue with the 'music' on court, saying it was 'too noisy', also peppering his complains with a number of expletives as he asked for fans to be silent.

The 20-year-old Australian complained about various issues during the course of the match.

The match saw Kyrgios lose his temper several times on court, calling the umpire a 'terrible referee' and accusing him of making bad line calls.

6th seed Tomas Berdych beat 29th seed, home player Nick Kyrgios in 4 sets 6-3, 6-4, 1-6, 6-4

Roberto Bautista Agut has pulled off a big upset, beating Croatia's Marin Cilic in straight sets - 6-4, 7-6, 7-5

Thereafter, although Djokovic did manage to win the next two sets, his own game was error-strewn as well, and he finished the match having committed 37 to Seppi's 38 despite having started off much stronger.

Reigning champion Djokovic took the first set with ease, with Seppi committing 7 unforced errors that set.

The top seed beat the 28th seed after being taken to a tiebreak in the final set.

Novak Djokovic has beaten Italy's Andreas Seppi in straight sets, 6-1, 7-5, 7-6.

Rohan Bopanna progresses to round 3 of Australian Open, Mahesh Bhupathi crashes out

Rohan Bopanna and his partner Florin Mergea beat the Czech pair of Lukas Dlouhy and Jiri Vesely 6-3, 6-2 to progress to round 3 of the Australian Open.

Bhupathi has never won the Australian Open title, although he has reached the finals three times in the past.

Third seeded at the Australian Open, Bob and Mike Bryan are regarded as the greatest doubles pair of all time.

India's Mahesh Bhupathi and partner Gilles Muller of Luxembourg have crashed out of the Open after a straight sets loss to the Bryan Brothers, who won 6-3, 6-2.

She has also won the doubles title in Melbourne 4 times.

Williams has won the Australian Open singles title on 6 past occasions, most recently last year.

World No. 1 Williams is the reigning champion at the tournament, beating Maria Sharapova last year.

Top seed Serena Williams beat Daria Kasatkina in straight sets - 6-1, 6-1, to progress to round 4 of the Australian Open.

It's all over for Grigor Dimitrov as Roger Federer wins in 4 sets - 6-4, 3-6, 6-1, 6-4

Federer breaks Dimitrov to take a 5-4 lead, and will now serve for the match.

After beating both her Round 1 and Round 2 competitors in straight sets, World Tour Finals winner Radwanska beat Puig 6-4, 6-0.

4th seed Agnieszka Radwanska has easily beaten her competitor Monica Puig.

Dimitrov manages to hold, as he goes 3-4 in the 4th set. Federer leads two sets to one, however.

Federer's match is now in the fourth set after he wins the third 6-1.

Yet another set point - and it's game and set Dimitrov, who wins it 6-3! The pair are now level at one set apiece.

It's Dimitrov's third set point; he leads 40-0.. but Federer returns! 40-15.

Federer took the first set against Dimitrov 6-4, with the Bulgarian breaking him twice in the second set to go 5-3 and is now serving for the set.

After bageling opponent Anna-Lena Friedsam in the first set, Vinci lost the final two sets in quick succession - 4-6, 4-6, for Friedsam to take victory.

US Open finalist Roberta Vinci, who shocked Serena Williams last year, has crashed out of the Australian Open today.

Tsonga beat his compatriot, doubles specialist Herbert, 6-4, 7-6, 7-6.

Jo-Wilfried Tsonga beats Pierre-Hugues Herbert in straight sets; he's taken to tiebreak in both the final two though, so not all easy sailing.

48 minutes is what it takes as Roger Federer wins the first set 6-4.

An easy hold for 'Baby Federer' Grigor Dimitrov in the first game; he holds to go 1-0 against Roger Federer.

Elsewhere, the mixed doubles match between Martina Hingis/Leander Paes and Anastasia Pavlyuchenkova/Dominic Inglot has been called off due to rain.

However, she lost her way in the final set, with Sharapova ultimately winning 6-1, 6-7, 6-0; the American was bageled in the final set.

Davis made a staggering comeback in the second set to win it 7-6 after a tiebreak with some strong forehand winners and a series of errors from the Russian.

The 22-year-old American lost the first set 1-6 to Sharapova.

Maria Sharapova is playing American challenger Lauren Davis.