Ireland made history at Chicago's Soldier Field on Saturday with their first win over New Zealand, beating the All Blacks 40-29.
Here, Press Association Sport runs the rule over the best of the reaction on Twitter.
"Brilliant, totally brilliant - this result sets up Lions, confirms as many believe @AllBlacks getting carried away with their own publicity" - World Cup-winning former England rugby union coach Sir Clive Woodward (@CliveWoodward).
"Xjdjdosjnajshehebdbshsjdhchxnslapehdvzjsjdjskwkdhsjsks!!!!!!!!!!!!!!!!!!!" - golfer Rory McIlroy (@McIlroyRory).
"Cannot believe that just happened .. congratulations Ireland . What a performance! Been a long time coming." One Direction member Niall Horan (@NiallOfficial).
"Congratulations Ireland. A long time coming but deserved the win tonight. Someone's happy & it's not me @RonanOGara10"! - former New Zealand fly-half Dan Carter (@DanCarter).
"Oh to be an Irish rugby player today.. what a feeling..ye are some warriors..get up ye boyo's.. gutted to be missing the session in Chicago" - former Ireland fly-half Ronan O'Gara (@RonanOGara10).
"To a man we were brilliant but @ConorMurray_9 once again was ridiculous!!!" - former Ireland centre Brian O'Driscoll (@BrianODriscoll).
"I'm actually sick saying it. But we're some little country" - golfer Shane Lowry (@ShaneLowryGolf).
"That was a special inspired performance - so well done Ireland !!!" - golfer Paul McGinley (@mcginleygolf).
