Mischa still finds time to tease 'Sascha', despite his little brother's rapid ascent up the tennis rankings.
World No 2 Rafael Nadal sailed into the quarter-finals of the China Open, his first tournament in 13 weeks, with a 6-3, 6-4 win over German qualifier Peter Gojowczyk on Thursday.
Andy Murray will only play at next year's Australian Open if his back has recovered enough for him to win the title.
Stanislas Wawrinka did what he had to do with victory over a weary David Ferrer at the ATP World Tour Finals on Friday and now needs a favour from Rafael Nadal to reach the semi-finals.
World number one Rafael Nadal recovered from an upset loss against Belgium's David Goffin to win the deciding doubles match and send Spain into the semi-final of the ATP Cup teams event in Sydney in the early hours of Saturday. Spain will now play host nation Australia in the inaugural event, while Serbia, led by world number two Novak Djokovic, take on Russia.
Rafael Nadal will be pose a significant Grand Slam threat again next year after showing signs of returning to his best, according to two of the Spaniard's greatest rivals.
IMAGES of the all the action from Day 1 of the Australian Open played at Melbourne Park on Monday
Switzerland's preparations for the Davis Cup Final against France in Lille on Sunday have been disrupted by a back injury to Roger Federer and a spat within the Swiss camp.
Former US Open champion Juan Martin del Potro has withdrawn from the Australian Open due to a lingering wrist injury that he was concerned could cause him further damage if he played the season opening Grand Slam.
German seventh seed Alexander Zverev recovered from a slow start to beat former champion Stan Wawrinka 1-6, 6-3, 6-4, 6-2 in the Australian Open on Wednesday to reach his first career Grand Slam semi-final. Swiss Wawrinka, who won the first of his three Grand Slams at Melbourne Park in 2014, broke Zverev twice early in the opening set to breeze through the opening set but the 22-year-old German came roaring back into the contest.
Novak Djokovic sauntered past Spaniard Feliciano Lopez to reach the quarter-finals of the Shanghai Masters on Thursday but Andy Murray had to claw past big-serving American John Isner after losing a first-set tiebreaker.
A long year has taken its toll on some of the world's best tennis players but the relentless Novak Djokovic gives no indication that he is about to slacken the pace as he heads to the season-ending ATP World Tour finals in London.
Olympic champion Andy Murray restored some order at the Western & Southern Open by cutting down South African giant Kevin Anderson to reach the quarter-finals on an upset-filled Thursday in Cincinnati.
Fans starved of live tennis action on TV will be able to watch the matches via a live stream on Tennis Channel's new Over-the-Top (OTT) platform -- Tennis Channel International or via Tennis Channel's.
Madison Keys swept past Wimbledon champion Elena Rybakina 6-2, 6-4 at the Cincinnati Open on Friday, setting up a semi-final clash with Petra Kvitova after the Czech defeated Ajla Tomljanovic.
Reigning French Open champion Maria Sharapova, former world number one Venus Williams and Australian Samantha Stosur sailed into the second round of the China Open with straight set victories on Sunday.
Nadal, bidding for a record-extending 14th French Open title, won the first five games of the match as he looked on course to repeat his drubbing of the Serb in last year's final.
Djokovic received a lot of heat from the tennis community and fans alike after testing positive.
The fifth-seeded Ukrainian reached her second straight Grand Slam semi-final after also making the last four at Wimbledon in July.
Although he had beaten Nadal 12 years ago at Wimbledon, few gave Luxembourg's Muller a chance on Monday against the fourth seed and French Open champion. 'This is definitely the biggest victory since then, since I came back, especially at that stage of a grand slam, playing one of the guys who is dominating the tennis this year again. Definitely the biggest win'
Men's tennis steps into the unknown next week when the young guns expected to follow in the footsteps of the current golden generation contest the inaugural Next Gen ATP Finals in Milan.
Ukrainian second seed Elina Svitolina ended Naomi Osaka's remarkable recent run with a 6-4, 6-2 triumph over the Indian Wells champion in the second round of the Miami Open on Friday.
He will skip the two Masters series events in Shanghai and Paris next month.
Djokovic's challenger will be a 22-year-old who is bidding to become the first Greek to win a singles major.
Gunning for yet another Grand Slam title, India's old war horse Leander Paes and his Czech partner Radek Stepanek have been seeded fifth at the Australian Open and they will open their campaign against Czech pair of Lukas Dlouhy and Lukas Rosol.
On court Novak Djokovic is taking tennis to extraordinary new levels with his single-minded obsession with winning; off it the Serbian is more than happy to share power. The 29-year-old will begin his attempt to win a fourth Wimbledon title on Monday when he plays British wildcard James Ward on Centre Court -- 12 months after claiming a second successive title by beating Roger Federer.
A summary of Novak Djokovic's rise in the tennis circuit in photos.
Top seed Simona Halep came back from a set down for the third time in the tournament to beat Kazakhstan's rising star Elena Rybakina 3-6, 6-3, 7-6(5) to win the Dubai Duty Free Tennis Championships for the second time on Saturday. In a battle that lasted nearly two-and-a-half hours, the match came down to a tiebreak where two shots that went agonisingly wide for Rybakina eventually decided the title in front of a noisy crowd that constantly chanted Halep's name.
In-form Victoria Azarenka battled past an ailing but determined second seed Angelique Kerber to set up a Miami Open final showdown against Svetlana Kuznetsova with a 6-2, 7-5 victory on Thursday.
Roger Federer won the inaugural Istanbul Open on Sunday, beating third seed Pablo Cuevas 6-3, 7-6 (11) for his first clay title in three years.
Raducanu falls in first match since US Open triumph.
World No 2 Novak Djokovic produced a magical display to overcome the ferocious hitting of Argentine Juan Martin del Potro and successfully defend the Shanghai Masters title on Sunday.
Sharapova was broken in the first game but fought back to draw level before going on to take the first set with a hold to love.
Britain's world number two Andy Murray pulled out of the US Open on Saturday, citing a hip injury.
Sonego's first top-10 victory capped a dream week for the 25-year-old, who lost the final qualifier but entered the main draw as a lucky loser.
Roberto Bautista Agut, the world No. 15, has confirmed his participation in the 20th edition of the Aircel Chennai Open, to be held at SDAT Stadium in Nungambakkam from January 5 to 11 next year.
The 2020 international calendar concluded with the three tournaments in the Asia leg which was conducted in Bangkok in successive weeks.
Indian Davis Cupper Prajnesh Gunnewaran, on Wednesday, earned the biggest win of his career by stunning world number 23 Denis Shapovalov in the opening round of the ATP Mercedes Cup in Stuttgart.