Kilkenny suffered their first defeat of the NHL when they fell to a 4-14 to 3-13 reversal to defending champions Galway.
Michael Fennelly and Eddie Brennan got the Cats off to a flying start with early goals, but Galway responded with goals from Joe Gantley and Iarla Tannion.
The Tribesmen led by 2-7 to 2-5 at half-time, and reached for the finish line in a thrilling second half with goals from Cyril Donnellan and Tannion, with Colin Fennelly netting a third Kilkenny goal.
Kevin Moran hit a late winning point to give Waterford a 0-18 to 0-17 win over Cork in a closely contested tie.
After playing with the wind, the Deise turned around with a 0-11 to 0-10 interval lead, thanks to scored from Maurice Shanahan, John Mullane and Richie Foley.
Pat Horgan had kept the Rebels in touch with his accuracy from frees, but Foley got Waterford back on track with an excellent point, before Moran hoisted the winner.
Colm 'Gooch' Cooper displayed all his old magic to inspire Kerry to a 0-16 to 0-8 win over Galway in the NFL at Killarney.
Cooper hit eight points, five of them from play, as the Kingdom plunged the Tribesmen deeper into relegation trouble.
Kerry led by 0-8 to 0-3 at half-time, and while Cormac Bane and Owen Concannon kept Galway in touch, Cooper's mastery, allied to scores from Bryan Sheehan and Kieran Donaghy, clinched Kerry's victory.