Novak Djokovic and Stan Wawrinka are set to return to the court at the Mubadala World Tennis Championship in Abu Dhabi in December.
Former world number one Djokovic curtailed his season prematurely after an elbow injury forced him to retire from his Wimbledon quarter-final against Tomas Berdych in July.
The 12-time grand slam champion will return before the year is out, though, having agreed to join Rafael Nadal, Dominic Thiem, Milos Raonic and Pablo Carreno Busta for his fifth outing at the exhibition tournament.
"I am extremely excited to return to Abu Dhabi for the fifth time and take part in the 10th edition of the Championship," said Djokovic in a statement.
"It is a huge honour to take part in such a special tournament. The line-up is very strong as always and it will be the perfect way to make my comeback and begin the season.
"Abu Dhabi is an amazing place and this is going to be a great event for all of the fans."
Wawrinka will also make his comeback in Abu Dhabi having opted to undergo knee surgery in August rather than defend his US Open title.
"It is always a pleasure to kick the season off at the beautiful event in Abu Dhabi," said Wawrinka, whose last appearance was a first-round Wimbledon loss to Daniil Medvedev.
"The fans are amazing there and the draw is as strong as always with a lot of great players. My recovery is going well and I can't wait to be back on court.
"I'm working hard together with my team and looking forward to being back."
20. Februar 2018
|Stones making no excuses for shock Wigan defeat|
|Bellugi scathing of Inter form and transfer policy|
|Ringrose could make Six Nations impact after comeback|
|Rakitic: I´ve not seen Messi in the gym this often|
|Winter Olympics 2018: Slovenian ice hockey star Jeglic sent home after positive doping test|
|Sevilla v Manchester United: Montella and Mourinho unified in pursuit of identity|
|Besiktas face Bayern test, Messi seeks to end drought - Champions League in Opta numbers|
|Jose Morais: The Mourinho acolyte bringing Barcelona to Barnsley|
|I´ve been bored – Ricciardo itching for start of F1 season|
|Rakitic: More to Chelsea than just Hazard|
|Hosmer agrees to eight-year deal with Padres|
|Cilic untroubled as Fognini battles in Rio|
|Sock, Chung through at Delray Beach|
|Klopp tactics behind my form – Salah|
|Young: Man United can win Champions League|
|Harper refuses to talk free agency, says he´s focused on this season|
|Messi is best but ´not invincible´, says Pedro|
|It´s a red card – Guardiola accepts Delph sending off amid City´s Wigan woe|
|Goffin hopeful of ´fast recovery´ after nasty eye injury|
19. Februar 2018
|Aguero lashes out at fan as tempers flare after Wigan stun Man City|
|Grigg revels in dousing Manchester City´s fire|
|Dzumhur saves four match points to down Kukushkin|
|Wigan Athletic 1 Manchester City 0: Grigg ends Guardiola´s quadruple dream|
|Edinburgh to finish season at Murrayfield|
|Messi the best but don´t forget Suarez, says Chelsea boss Conte|
|I need a great game – Hazard aiming for Messi heights|
|AFC Champions League Review: El-Arabi´s brace seals Al Wahda´s fate|
|Dubai disappointment for Radwanska|
|Patriots knew Butler would be benched, says McCourty|
|Barcelona boss Valverde tells Chelsea: History counts|
|Schmidt departs as Wolfsburg face relegation fight|
|Madrid, Barca & PSG are Champions League favourites, says Heynckes|
|I was at rock bottom – Brook opens up on depression battle|
|Rashid in form as Afghanistan rout sorry Zimbabwe|
|Toulon president charged over Bastareaud comments|
|Biggar, Halfpenny and Faletau all fit as Wales given clean bill of health|
|Hughes availability ´absolutely huge´ for England, says Alphonsi|
|Former football coach Bennell sentenced to 31 years|
|Why didn´t Jimmy Butler play in NBA All-Star Game?|
|Returning Ringrose added to Ireland Six Nations squad|
|Hummels wary of ´top European team´ as Bayern prepare for Besiktas|
|In-form Kvitova withdraws from Dubai|
|WATCH: ´Crazy´ Evra drives to West Ham training in London cab|
|Barca clash a chance for Chelsea ´to do things right´, proclaims Rudiger|
|Lucas claims Tottenham can win Champions League|
|Federer the ´complete player´ with number-one return - Schuettler|
|LeBron relishes one more link-up with Irving|
|Barcelona tie will not decide Conte´s Chelsea future, says Deco|
|Cordner signs bumper deal with Roosters|
|Lewandowski won´t be distracted by Real Madrid rumours|
|Bennett signs on until 2019 with England|
|Man Utd must not underestimate Sevilla - Navas|
|Coleman demolishes 20-year-old 60m world record|
|Red Bull reveal ´special edition´ livery on 2018 car|
|Iniesta will not be made welcome at Stamford Bridge, warns Azpilicueta|
|Ballack sees ´a big difference´ between Bundesliga and Premier League|
|Karmichael Hunt faces no conviction, but will remain sidelined|
|Betis boss would have preferred to face Madrid´s BBC|
|Chelsea v Barcelona: Messi´s blues against the Blues|
|James leaving Madrid was the best thing, says father|
|He´s looking good – Zidane thrilled with Ronaldo|
|It needs to take 30 seconds – Matic wants quicker VAR|
|Team LeBron edges Team Stephen in thrilling All-Star Game|
|McIlroy sees progress despite failing to contend at Riviera|
|Silver supports NBA players speaking out on social issues|
|Mickelson ready for Masters after third straight top-six finish|
|Gattuso: My job is to be the players´ nightmare until season´s end|
|I wasn´t good enough – Guardiola reveals Wigan rejection|
|Dillon reigns supreme with overtime win at Daytona 500|
|Bubba Watson ends drought with third Genesis Open title|