Hull City were made to pay for a host of missed chances as they were held to a draw by Championship rivals Brighton.
Hull knew a win would lift them into the top six, while Brighton, just a point behind the hosts, were also looking to maintain their own push.
The Tigers, who kept a club-record sixth straight league clean sheet, saw Cameron Stewart hit the bar.
Brighton, who lost 6-1 to Liverpool on Sunday, watched Craig Mackail-Smith shoot straight at Vito Mannone.
Another shut-out for Nick Barmby's side broke a long-standing defensive record set in 1908, but the Hull boss will still be concerned about his side's lack of goals.
The Tigers have netted only five times in their last nine Championship games and it proved their undoing against Gus Poyet's men.
Hull substitute Aaron Mclean should have won it 12 minutes from the end but he skied over the bar from close range after good work from Robert Koren.
Stewart had Hull's best chances in the first half, failing to squeeze home Matty Fryatt's early right-wing cross before smashing an 18-yard thunderbolt against the Brighton bar.
Brighton's threat was most apparent on the counter-attack with Liam Bridcutt, scorer of two own goals in Sunday's heavy defeat at Anfield, and Abdul Razak testing on-loan Arsenal goalkeeper Mannone.
Hull manager Nick Barmby: "I'm proud of the lads tonight. They played really well, some of our play was first class, but it was just one of those nights where it wasn't going to go in.
"Their attitude and application was first class, on another day you score a few goals and win the game.
"If you're not creating chances you've got a problem but we're creating them. I back the players."
Brighton boss Gus Poyet: "For half an hour we looked alright and then Cameron Stewart hit the crossbar and they put us under pressure and created more chances. They finished the first half better than us.
"Second half we tried to be more organised and not give too much space but at the same time we tried to win the game.
"This pitch is not the best in the division which made us change the way we played. It's a good point for us."