Blackpool and Rochdale played out a quiet first half at Bloomfield Road as neither side could find an opener before half time.
The first chance of the match fell to Rochdale striker Ian Henderson, who produced a curling effort that was stopped by a fingertip Kyle Letheren save.
Rochdale continued to dominate the first half, as a Joe Bunney strike hit the side-netting, before Donal McDermott twice came close to opening the scoring.
Blackpool's first chance of the match fell to Mark Cullen, whose strike was saved by Josh Lillis.
The officials added five minutes of injury time following an early problem for Tom Kennedy, but neither side were able to find an opportunity before the break.
