The boxing world was caught by surprise with the announcement that Kell Brook will challenge the ferocious Gennady Golovkin for his middleweight world title in September.
Unbeaten knockout king Golovkin is one of boxing's most avoided champions so there was some shock when his next opponent was announced to be Sheffield's Brook - particularly as the IBF welterweight champion would have to leap two up two weight classes to do so.
There has been widespread praise for Brook for taking the fight and backing up his long-held assertion he wants to fight the biggest names in the sport.
Here are a selection of comments on the announcement from fighters on Twitter, starting with long-time rival Amir Khan.
Amir Khan: Behind you 100% @SpecialKBrook glad you took a leaf out of my book, tough ask but anything can happen, just don't pull out
WBC cruiserweight champion Tony Bellew: This puts people straight who think @SpecialKBrook doesn't wanna face top opposition! He's facing the most feared middleweight I've seen!
Former world heavyweight champion David Haye: Big shout out to @SpecialKBrook taking on the most feared & dangerous fighter on the planet @GGGBoxing. The U.K. Needs to get behind Brook!
WBA bantamweight champion Jamie McDonnell: Great fight for @SpecialKBrook buzzing for u mate
IBF super middleweight champion James Degale: When opportunity knocks you have to take it with both hands .... Go do it bro! Your time! #GolovkinBrook @SpecialKBrook
Sheffield prospect Adam Etches: Buzzing for my pal @SpecialKBrook taking on @GGGBoxing #ballsofsteel you don't need any help selling this 1 out! @EddieHearn #AllOfTheLights
Former British light welterweight champion Curtis Woodhouse: Wow!!!!!!!!! @SpecialKBrook we don't mess about in Yorkshire, your time bro #AllOfTheLights
Commentator Nick Halling: This @GGGBoxing - @SpecialKBrook announcement is literally breathtaking. What a fight. Stunning and very exciting news