Jonjo Shelvey scored his fifth goal in four games to help Blackpool to a hard-earned point at Middlesbrough.
Middlesbrough's Scott McDonald headed home from Barry Robson's cross before Ludo Sylvestre levelled from 15 yards in the 21st minute.
Goalkeeper Matthew Gilks impressed with a double save from Marvin Emnes and McDonald before the latter re-established Middlesbrough's lead.
Shelvey's 10-yard shot secured the point 12 minutes from time.
Middlesbrough are now unbeaten in 16 home matches, but they will rue a missed opportunity to secure a third successive home win for the first time in two years.
Boro controlled much of the game but a brilliant display from Blackpool keeper Gilks was a defining factor in Tony Mowbray's side slipping three points behind West Ham, who hold the second automatic promotion spot.
Middlesbrough fielded an unchanged side, but Gary Taylor-Fletcher returned to the Blackpool attack in the unexpected absence of Lomana LuaLua from the squad.
Blackpool were clinical in their responses to Middlesbrough's domination, showing a spirit that will have pleased manager Ian Holloway.
He will be satisfied too that it was Matt Phillips, returning from a loan spell at Sheffield United, who found Shelvey with a penetrating cross.