Ipswich Town's Championship automatic promotion hopes suffered a blow as the leaders were defeated by Norwich City in a tense East Anglian derby at Carrow Road.
Marcelino Nunez's first-half free-kick was the difference in a game that did not see the best of either side's usually potent attacks.
It is the first time in 15 Championship matches Ipswich have failed to score, and their wait for a first derby win since 2009 means Kieran McKenna's side could be third by the time Saturday's 15:00 BST games have finished.
The Canaries consolidated sixth place and boosted their chances of making the play-offs with an eighth straight home win.