Jim Mallinder says Saints must make rapid improvements after their sobering Aviva Premiership opening-night defeat at Sixways.
Worcester Warriors were jubilant as Tom Heathcote’s last-gasp drop goal secured a memorable 13-12 win for the league newcomers.
But it was tough to take for Saints, who had taken a 12-10 lead with just a minute to go thanks to Stephen Myler’s penalty.
All in all, the Warriors deserved their win, and their victory margin could have been greater had they not missed four second-half penalties.
Saints now move on to face Newcastle Falcons at stadium:mk next Saturday - and Mallinder knows his men have to get better.
“It was a good kick by Stephen to get that, but then you’ve got to either look after the ball or defend and we didn’t,” said the Saints boss.
“Again, we spilt the ball and they won it.
“This is a disappointment for us because we wanted to come here and start the season with a win.
“We’ve not managed to do that, but it is a long season and we’ve got a good squad of players and we will get better.
“We need to do it pretty quickly.”