Newport Gwent Dragons bowed out of the LV= Cup as Northampton Saints scored five tries to secure a bonus point victory at Rodney Parade.
Northampton tries came from wing Fa'atoina Autagavaia, a penalty try, hooker Mike Haywood, prop Gareth Denman and back row Gerrit Jan Van Vetize.
All the Dragons' points came in the first half - a try from scrum-half Luc Jones plus a conversion and three penalties by fly-half Jason Tovey.
Victory means the Saints are almost certain to be through to the knockout stages.
Newport Gwent Dragons: Dan Evans, Matthew Pewtner, Pat Leach, Ashley Smith, Will Harries, Jason Tovey, Luc Jones; Phil Price, Elliot Dee, Nathan Buck, Cory Hill, Adam Jones, Lewis Evans (c), James Benjamin, Netani Talei.
Replacements: T. Rhys Thomas, Owen Evans, Joe Mills, Matthew Screech, Jevon Groves, Richie Rees, Kris Burton, Ross Wardle.
Northampton Saints: James Wilson, Ken Pisi, Tom Stephenson, Dom Waldouck, Fa'atoina Autagavaia, Glenn Dickson, Kahn Fotuali'i; Ethan Waller, Mike Haywood, Gareth Denman, Rob Verbakel, Christian Day, Teimana Harrison. Phil Dowson (capt), GJ Van Velze.
Replacements: Ross McMillan, Danny Hobbs-Awoyemi, Adam Parkins, Ben Nutley, Matt Williams, Alex Day, Sam Oliver, George Pisi.
Referee: Andrew Small (RFU).