Manny Pacquiao will defend his welterweight title against Jeff Horn on Saturday at the Suncorp Stadium in Brisbane, Australia (ESPN, 9 p.m. ET).
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Pacquiao (59-6-2, 38 KOs) has won two fights in a row since losing a one-sided affair to Floyd Mayweather in 2015 -- both clear decisions victories in 2016 against Timothy Bradley Jr. and Jessie Vargas. Horn (16-0-1, 11 KOs) fought three times in 2016, winning all three bouts by stoppage.
Here's all you need to know ahead of their title fight on Saturday.
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Horn takes Pacquiao's title in stunning upset
Jeff Horn was a bloody mess by the end of Saturday night's fight against Manny Pacquiao, but he left the ring the new welterweight champ after claiming a shocking unanimous decision before his hometown crowd at Suncorp Stadium in Brisbane, Australia. -- Dan Rafael
Horn defeats Pacquiao via controversial decision
Jeff Horn and Manny Pacquiao battle for 12 hard rounds but all three judges saw the fight for the 29-year-old Australian.
Pacquiao was made to look old - now he should retire
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Horn eyeing Mayweather fight in Las Vegas
Fresh from conquering "Pacquiao Mountain," newly crowned welterweight champion Jeff Horn said he is eyeing a big-time fight in Las Vegas. -- Jake Michaels
Questionable decision spoils Pacquiao's return
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Outrage over Horn's controversial win
Jeff Horn's win by unanimous decision against Manny Pacquiao didn't sit too well with Stephen A. Smith and Teddy Atlas.
Horn battles back to take unanimous decision
After Jeff Horn takes some serious damage in the ninth round, he and Manny Pacquiao fight to the final second, and Horn is awarded a unanimous decision victory.
Sports world shocked by decision in Manny Pacquiao-Jeff Horn fight
Several professional athletes expressed their displeasure with the result of the fight between Manny Pacquiao and Jeff Horn on Saturday night. -- ESPN.com
Pacquiao-Horn by the numbers
Jeff Horn stuns Manny Pacquiao. Check out the key numbers to know. -- ESPN Stats & Information
Atlas says Pacquiao was robbed
Teddy Atlas is in shock that the judges ruled in favor of Jeff Horn over Manny Pacquiao and thinks home-country bias was at play.
Horn calls for Mayweather
After shocking Manny Pacquiao, Jeff Horn wants to face Floyd Mayweather. Horn is also interested in a rematch with Pacquiao.
Stephen A., Bradley Jr. can't see eye-to-eye
While both Stephen A. Smith and Timothy Bradley Jr. agree that Jeff Horn should have lost to Manny Pacquiao, they cannot seem to agree with how the judges made their decision.
Pacquiao respects decision of judges
Manny Pacquiao is gracious in defeat, but is interested in a rematch with Jeff Horn later this year.
Stephen A.: Judges' decision on Pacquiao-Horn 'bogus'
Stephen A. Smith gets animated over the judges' decision to give Jeff Horn the victory unanimously over Manny Pacquiao.
Atlas apoplectic after judges rule for Horn
Teddy Atlas equates Jeff Horn's victory to everyone receiving participation trophies and takes his anger out on the desk.
Breaking down Pacquiao vs. Horn
Can Manny Pacquiao finish Jeff Horn and revamp his career at age 38? Will Horn take advantage of fighting at home in Australia and score a big upset? Bernardo Pilatti has some answers. -- Bernardo Pilatti
Ringside Seat: The guide to Pacquiao-Horn
ESPN's Dan Rafael looks at what's at stake -- and what to expect -- when welterweight world titleholder Manny Pacquiao and Jeff Horn meet Saturday night in Australia in front of 60,000 fans. -- Dan Rafael
Pacquiao: 'We are still here and not done in boxing'
Manny Pacquiao, boxing's only eight-division titlist, could be at the end of his illustrious career. But the PacMan makes sure to remind boxing fans he's still got it and plans to show it on Saturday. -- Dan Rafael
Pacquiao's most memorable fights in images
Manny Pacquiao, who faces Jeff Horn in the "Battle of Brisbane" in Australia on Saturday, has had a legendary boxing career. We take a look at Pacquiao's most significant fights. -- Dan Rafael
Manny Pacquiao's greatest hits
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Manny Pacquiao still fan favourite in Australia
He may be fighting local hero Jeff Horn on Sunday but boxing legend Manny Pacquiao is still the favourite amongst the Brisbane crowd. -- Jake Michaels
Pacquiao ready to put on show for the fans
Manny Pacquiao sizes up his opponent, Jeffrey Horn, and discusses the impact of his first non-pay-per-view fight since 2005.
Pacquiao, Horn make weight for title fight
Manny Pacquiao and Jeff Horn have both made weight for Sunday's 'Battle of Brisbane' for the WBO welterweight championship. -- ESPN.com news services
Pacquiao and Horn weigh in ahead of Saturday's championship fight
Manny Pacquiao stares down Jeff Horn after he throws his clothes into the crowd before the official weigh-in.
Atlas: Horn would become 'national hero' with win over Pacquiao
Defeating Manny Pacquiao will make Australian Jeff Horn an "instant national hero", says legendary trainer and ESPN commentator Teddy Atlas. -- Jake Michaels
Roach expects 'to see the old Manny'
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How to bet the Jeff Horn-Manny Pacquiao fight
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Atlas predicts Pacquiao win by KO
Teddy Atlas gets in the ring with Tim Bradley to show how Manny Pacquiao will knock out Jeffrey Horn.
Atlas shows how Horn can pull off an upset
Teddy Atlas and Tim Bradley break down how Jeffrey Horn can come away with a surprise victory on Saturday.
Who is Jeff Horn?
The old adage "never judge a book by its cover' could not be any truer for Australia's best pound-for-pound boxer, and those who underestimate his chances against Manny Pacquiao, who write him off, do so at their own peril. -- Jake Michaels
Horn expecting 'a war of punches' with Pacquiao
Australia's Jeff Horn explains his excitement for his fight against Manny Pacquiao on Saturday.
Top stats to know: Pacquiao vs. Horn
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Teddy Atlas: Expectations for Pacquiao-Horn
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Can Horn's will best Pacquiao's skill?
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Does Horn have a chance against Pacquiao?
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Police urge Pacquiao to keep low profile
Manny Pacquiao has been urged not to make any more public appearances ahead of Sunday's WBO World Welterweight fight at Suncorp Stadium amid rising safety fears. -- Jake Michaels
Pacquiao's coach dismisses green Horn
Manny Pacquiao's Australian conditioning coach thinks Jeff Horn is out of his depth and will be overwhelmed by the enormous crowd in Brisbane for their fight. -- ESPN.com news services
OnScene: Follow the Battle of Brisbane build up live
Don't miss a minute of what's going in Brisbane as Australian Jeff Horn prepares to face Manny Pacquiao for the WBO World Welterweight championship. -- Jake Michaels
Is Manny Pacquiao boxing's last great?
As Manny Pacquiao prepares for his 68th fight, Steve Bunce discusses whether he is the last great left in boxing.
Manny Pacquiao's greatest hits
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End of the line or a new beginning for Pacquiao?
Manny Pacquiao has an opportunity to make America fall in love with him again. All he has to do is to put on a show against Jeff Horn on Saturday -- and a KO win could go a long way, writes Nigel Collins. -- Nigel Collins
Pacquiao looking to make a statement against Horn
Manny Pacquiao comments on his upcoming fight against Jeff Horn, predicting it will be a "real good one for the fans."
Robert Garcia: "I think Manny still has it"
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Horn: Phone-obsessed Pacman taking me lightly
Manny Pacquiao's mobile phone antics are proof the Filipino great is not taking the Battle of Brisbane seriously enough, Jeff Horn said on Wednesday at the last official press conference before the weigh-in. -- ESPN.com news services
Horn says it's hard to prepare for someone like Pacquiao
Jeff Horn discusses his upcoming fight against Manny Pacquiao on Saturday in front of a packed house in Brisbane, Australia.
Pacquiao: '100% prepared' for Horn fight
Manny Pacquiao states he's 100 percent ready for his welterweight fight, while Australian Jeff Horn is feeling relaxed and ready to go on Saturday.
Trainer: With win, Pacquiao eyes Floyd again
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Roach: Pacquiao wants Mayweather rematch
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Pacquiao determined to knock out Horn
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Pacquiao's love for exercise
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Inspiring fans important to Pacquiao
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Pacquiao arrives in Australia ahead of title fight
Pacquiao was expected to attend church and have a light training session on Sunday in Brisbane, after he arrived late Saturday for his world title fight against Horn. -- ESPN.com news services
Horn says he has the plan to beat Pacquiao
While Pacquiao has been out running along the river and attracting attention downtown since arriving on a chartered flight with a huge entourage, Horn has been preparing for their WBO welterweight world title bout in the quiet outer suburbs. -- ESPN.com news services
Horn: I hope Pacquiao stays 'cocky'
Pacquiao and his team have been branded "cocky" after signing up to defend the WBO world welterweight title against Horn. -- ESPN.com news services
Arum: 'People don't have to pay extra to watch Pacquiao'
Promoter Bob Arum explains why the airing of Pacquiao's title fight against Horn on ESPN is important for the sport of boxing.
Pacquiao-Horn title fight to air live in the U.S. on ESPN
The welterweight title bout will be televised live on ESPN, marking the first time a Pacquiao fight will air live on basic cable. Broadcast not available in Australia. -- Dan Rafael
Pacquiao meets Horn, starts to prep for 'Battle of Brisbane'
Pacquiao has had bigger, more significant fights while compiling world titles in an unprecedented eight divisions. -- ESPN.com news services
Pacquiao and Horn ready to collide
Pacquiao and Horn give their thoughts on fighting in Brisbane and the advantages they'll have when they square off.
Pacquiao says Horn fight will show he's not done yet
Pacquiao says his world title bout with Horn is his chance to tell the boxing world "I'm not done yet." -- ESPN.com news services
Pacquiao deal for July fight vs. Horn done
Top Rank says the long-awaited deal for Pacquiao to defend his welterweight world title in Australia against Horn is complete. -- Dan Rafael
Horn promoter: Pacquiao fight set for July 2
Horn's promoter, Duco Events, announced in April that Pacquiao would face Australian Jeff Horn on July 2 in Australia (July 1 in the U.S.). Pacquiao's promoter, Top Rank, said the deal was not quite finalized. -- Dan Rafael