Danny Searle's Waterford beat Dundalk 3-2 at home in a highly-entertaining encounter at the RSC.
— Waterford FC (@WaterfordFCie) September 16, 2022
Dundalk struck first through Paul Doyle, before Shane Griffin and Darragh Power gave the home side a deserved lead before half-time.
Phoenix Patterson made it 3-1 with a goal for the FAI history books. A sensational strike from the edge of the box had fans on cloud nine.
WHAT A WIN! 💙💙 RSC was rocking, support was incredible again! https://t.co/ZtJGDPCx3Y
— Phoenix Patterson (@phoenix_p10) September 16, 2022
Keith Ward scored an injury time consolation goal for a Dundalk side who are absent from a semi-final draw for the first time in eight seasons.
Elsewhere, Treaty United booked their place in the semi-finals after a 4-1 win against UCD at Markets Field in Limerick.
Enda Curran scored a hat-trick for the home side while Willie Armshaw topped things off to make it 4-0, before UCD pulled one back late on.
𝗜𝘁 𝗪𝗮𝘀𝗻'𝘁 𝗮 𝗗𝗿𝗲𝗮𝗺 🥰
Thank you to all our supporters for making it the best night we've ever had at the Markets Field ❤️
📸 @Sportsfile pic.twitter.com/9Hr2pgrQWJ
— Treaty United FC (@TreatyUnitedFC) September 17, 2022
The other two quarter-finals see Derry City take on Shamrock Rovers, while Shelbourne face Bohemians - both kicking off on Sunday.