Anthony Joshua will fight Alexander Povetkin at Wembley in September, promoter Eddie Hearn has confirmed.
IBF, WBA and WBO champion Joshua and Hearn had earlier announced dates for two fights at the national stadium in London, with bouts on September 22 this year and April 13, 2019.
And Povetkin, as expected, will provide the Briton's first opponent.
"I can't wait to get back in the ring, the end of March [the Joseph Parker fight] feels a long time ago now," said Joshua (21-0).
"Povetkin is a serious challenge that I will prepare meticulously for. He has serious pedigree and only a fool would underestimate what he brings to the table.
IT’S ON! @anthonyfjoshua will defend his WBA,IBF,WBA and IBO World heavyweight titles against Alexander Povetkin at @wembleystadium on September 22! New York press conf tomorrow and London on Wednesday pic.twitter.com/NDCn7EpgvX— Eddie Hearn (@EddieHearn) July 16, 2018
"Training hasn't stopped for me, but the next 10 weeks ahead will be intense, both mentally and physically.
"I will push myself to breaking point to make sure I am in peak condition for another huge night for British boxing at Wembley Stadium on September 22."
Povetkin (34-1) added: "The battle for the world title has always been my goal. I fought for the moment to face the strongest in the world and, on September 22, I get my opportunity.
"Anthony Joshua has four belts and I want them all. I'm glad that our fight will finally take place, the meeting of two Olympic champions in the ring is destined to be a breathtaking event."
Joshua had been ordered by the WBO to take the mandatory fight to defend his belt, as negotiations faltered with Deontay Wilder over a potential unification bout.
Wilder remains a possible opponent for April after Hearn confirmed last week that Joshua is ready to sign a contract.
|Henry praises ´charismatic leader´ Falcao|
|WATCH: Cardinals WR Fitzgerald tackles former QB Warner on sidelines|
|Spurs right not to make signings – Pochettino|
|Icardi happy at Inter, close to contract renewal|
|This Week in U.S. Sports: Bosa leaves Ohio State while the World Series is almost set|
|Liverpool boost as Salah and Van Dijk join training|
|Cowboys discuss road woes, Prescott says team ´addressed the elephant in the room´|
|Isner scrapes through in Stockholm, Monfils eliminates Tsonga|
|Hinch says Altuve would be out with injury in regular season|
|WATCH: Schwarzenegger tells LeBron to make Lakers great again|
|LeBron tells Lakers coach Walton: I´m always fresh!|
|Mayweather should come back to fight me - Alvarez|
|Goerges battles past Vekic, Kasatkina wins all-Russian tie|
|Ask 32,000 Gibraltarians if the Nations League is meaningless - Styche|
|They´re going to speak about it for years - Azhar reflects on comical run out|
|Garcia in the mix as weather hits Andalucia Valderrama Masters|
|From lacking a ´football brain´ to signing a new contract – the Mourinho-Shaw saga|
|Alonso teases Indy 500 return as Hamilton reveals NASCAR temptation|
|Guptill ruled out of Black Caps´ UAE tour|
|UEFA investigating PSG-Red Star fan clashes|
|Just ´another weekend´ for champion-elect Hamilton|
|G League will offer $125K to top prospects in lieu of NCAA one-and-done route|
|Chargers defensive end Bosa ´a few weeks´ away from return, says father|
|Bale back in full Real Madrid training|
|Roma supporter found not guilty of inflicting GBH on Liverpool fan Sean Cox|
|´Fantastic´ Neuer will prove he´s still the best, says Lloris|
|Perez secures Force India stay|
|Australia wait on Khawaja scan|
|Shaw signs Manchester United extension|
|Jones lays down challenge to snubbed England star Cipriani|
|West Ham´s Pellegrini rejects Dzeko speculation|
|Emery fails to assure Ramsey of Arsenal future|
|Pakistan on course for victory after Babar 99 and farcical run out|
|Canelo ready to leave comfort zone to face Fielding|
|Eriksen ready for Tottenham return, Pochettino confirms|
|Titans coach rocked by Hurrell´s Rhinos switch|
|Rubin Kazan suspended from UEFA competition for FFP breach|
|Real Madrid could sack Lopetegui if results don´t improve, says Essien|
|On-court coaching would add to drama - Mouratoglou|
|Babbel lauds ´top class´ Ronaldo after Juventus switch|
|Carmelo Anthony: Rockets bench role challenging mentally|
|Maqsood preferred to Amir in Pakistan T20 squad|
|Make Ramsey Arsenal captain, don´t let him leave – Wilshere|
|Kaneria admits guilt in spot-fixing case|
|No coach can work miracles – Ibrahimovic defends under-fire Mourinho|
|Morgan earns England recall, Cipriani overlooked|
|Reavie leads CJ Cup, solid start from Koepka|
|Juventus kicked me out to sign Ronaldo – Higuain|
|England forward Hughes given six-week ban|
|Injured Halep withdraws from WTA Finals|
|Ronaldo exit makes all the difference for Real Madrid – Luxemburgo|
|Manchester United´s Chelsea Blues and other one-sided rivalries|
|Babbel fears for Kovac´s Bayern future|
|Bradley homers again, Red Sox take 3-1 lead over Astros|
|Ayton, Doncic shine on NBA debuts|
|Leonard focusing on future after Raptors debut|
|MLS Review: Rooney stunner seals DC win, Sounders clinch play-off spot|
|Pochettino ´proud´ of Dier for Ramos tackle|
|Wallabies name three uncapped players for All Blacks clash|
|Lakers coach Walton will monitor LeBron´s minutes, plans to use deep rotation|
|Lloris: United´s Pogba unfairly judged because of transfer fee|
|´Phenomenon´ Mbappe deserves Ballon d´Or, says Buffon|
|Dodgers on cusp of World Series after beating Brewers|
|Mata braced for ´difficult month´ at Man United|
|WATCH: Rooney scores wonderful free-kick for DC United|
|Kaino handed five-week ban for striking Roberts|
|Bears star Khalil Mack ´day-to-day´ with ankle injury|
|Anthony has ´a clearer understanding´ of his role with Rockets|
|Brewers remove Miley after one batter against Dodgers|
|Rams rule out Kupp for 49ers game|