Aidy Boothroyd defended his decision to send his Cobblers side out to draw at Grimsby Town in their FA Cup second-round defeat.
Town failed to score away from home once again as the Mariners secured a 2-0 win at Blundell Park that takes them into Sunday’s third-round draw.
Boothroyd went with the same system that had produced a 0-0 draw at Chesterfield in the team’s most recent away game, with a lone striker and five in midfield.
But it did not work, as Grimsby became the second non-League side in three years to knock Northampton out of the FA Cup.
“I’m deeply disappointed,” he said. “We knew it was going to be a difficult game because they’re doing well in their league and there’s not a lot of places between the two clubs.
“We set up with a game plan to frustrate them and to break on them and we were doing that.
“I really couldn’t see any danger apart from a set play, which we work on all week and have done since I’ve been there.
“One man loses his marker and it’s a really poor goal to concede.
“We created chances after that but didn’t get the final touch to get the replay.
“The second goal was disappointing but nowhere near as disappointing as the first because that changed the whole complexion of the game.”