Match ends, Northampton Town 3, Newport County 0.
Newport County dropped to sixth in League Two after their second heavy defeat in two games as Northampton recorded their third win in a row.
Cobblers defender Ryan Cresswell hit the crossbar in the first minute, before heading in Joel Byrom's corner.
Midfielder John-Joe O'Toole converted another Byrom set piece on 30 minutes.
Andy Sandell and Kevin Feely both had chances for County, but Lawson D'Ath's low drive completed the scoring for Northampton, who move up to 14th.
The Exiles, who were beaten 4-0 by Cambridge last weekend, host Shrewsbury Town next week, while Northampton travel to Accrington.
Northampton Town manager Chris Wilder told BBC Radio Northampton:
"We created and drove the game forward. It was important we weathered their good spell after half-time.
"I can't really complain, it's been another excellent performance and everyone has contributed. We feel it is a deserved result.
"We want to make a quick start in games, and we have done."
Newport County assistant manager Jimmy Dack told BBC Radio Wales:
"Normally we're very good on set pieces but we conceded two, which was really disappointing on our behalf.
"We didn't perform today and we didn't perform at Cambridge, so [we need to] dust ourselves down and get back winning when we get back home.
"For whatever reason, everyone has a little blip."
- 36CresswellBooked at 80mins
- 26HolmesSubstituted forHackettat 87'minutes
- 10O'TooleSubstituted forToneyat 66'minutes
- 9RichardsSubstituted forTozerat 84'minutes
- 3FeelySubstituted forParkerat 81'minutes
- 13SandellBooked at 51mins
- 14JeffersSubstituted forFlynnat 58'minutes
- 9HoweSubstituted forO'Connorat 68'minutes
- Darren Deadman
- Shots on Target
Second Half ends, Northampton Town 3, Newport County 0.
Ryan Cresswell (Northampton Town) wins a free kick in the attacking half.
Foul by Chris Zebroski (Newport County).
Foul by Ivan Toney (Northampton Town).
Andy Sandell (Newport County) wins a free kick on the right wing.
Foul by Ryan Cresswell (Northampton Town).
Chris Zebroski (Newport County) wins a free kick in the attacking half.
Attempt missed. Ivan Toney (Northampton Town) header from the centre of the box is close, but misses to the left.
Chris Hackett (Northampton Town) wins a free kick in the defensive half.
Foul by Andy Sandell (Newport County).
Substitution, Northampton Town. Chris Hackett replaces Ricky Holmes.
Attempt saved. Ryan Jackson (Newport County) right footed shot from outside the box is saved in the bottom right corner.
Substitution, Northampton Town. Ben Tozer replaces Marc Richards.
Goal! Northampton Town 3, Newport County 0. Lawson D'Ath (Northampton Town) left footed shot from the centre of the box to the bottom right corner.
Ricky Holmes (Northampton Town) wins a free kick in the attacking half.
Foul by Michael Flynn (Newport County).
Substitution, Newport County. Joe Parker replaces Kevin Feely.
Ryan Cresswell (Northampton Town) is shown the yellow card.
Attempt saved. Kevin Feely (Newport County) right footed shot from outside the box is saved in the top centre of the goal.