Christian Eriksen kept Tottenham's title hopes alive with a crucial strike to sink Crystal Palace 1-0.
Eriksen rescued Spurs with a long-range drive 12 minutes from time to ensure they remain four points behind leaders Chelsea.
Tottenham had endured a tough few days, losing the FA Cup semifinal to Chelsea on Saturday before Antonio Conte's side beat Southampton 4-2 to stay in control at the top.
They desperately needed a pick-me-up at Selhurst Park to keep their season alive, but that was never going to be easy against an in-form Palace side who have already beaten Chelsea, Arsenal and Liverpool this month.
The usually deadly Harry Kane and Dele Alli were kept quiet by a Palace rearguard marshalled superbly by Mamadou Sakho, who missed the victory over parent club Liverpool on Sunday due to the terms of his loan deal.
But when Sakho was forced off injured midway through the second half, Spurs sensed their chance and Eriksen's eighth goal of the season keeps them in touch at the top with five games to go.
Arsenal kept their hopes of Champions League qualification alive with a 1-0 win against Leicester at the Emirates.
Nacho Monreal's half-volley from the edge of the box was deflected past Kasper Schmeichel by Robert Huth with less than five minutes remaining to give Arsenal an important victory.
Arsene Wenger named a three-man defence again, with Nacho Monreal replacing Rob Holding and Kieran Gibbs at left wing-back. Hector Bellerin started in place of Alex Oxlade-Chamberlain on the right and Theo Walcott led the attack.
Petr Cech was called into action early, producing a fine save at point-blank range to keep out Riyad Mahrez's powerful strike. Francis Coquelin and Theo Walcott drew saves from Schmeichel, but Arsenal's best chance of a goalless first-half came moments before the break, Alexis Sanchez rattling the crossbar with a long-range shot.
Sanchez had another opportunity 10 minutes into the second half, following good work from Bellerin, but Huth nicked the ball off his foot before he could shoot.
Wenger switched tactics and introduced Danny Welbeck and then Olivier Giroud and Aaron Ramsey in an effort to find a breakthrough.
And the presence of Giroud in the area worked, as Leicester failed to clear a cross properly, presenting Monreal with the opportunity to seal three points for Arsenal in dramatic fashion.
That result leaves Arsenal sixth, but puts them four points behind fourth-placed Manchester City.
Middlesbrough claimed their first Premier League victory of 2017 and gave themselves slight hope of avoiding relegation with a 1-0 home win against local rivals Sunderland.
Marten de Roon struck the decisive blow in the eighth minute, controlling Adam Clayton's long ball on his chest before slipping it past onrushing Sunderland goalkeeper Jordan Pickford.
Premier League survival remains a tall order for Boro, with Steve Agnew's men still six points adrift of safety with only four matches to go.
But they are significantly better off than Sunderland, who are six points further adrift with just a single game in hand.