Eliezer Mayenda had the best chance of the first half for Sunderland in the opening minute of the game but saw his shot saved by Dan Grimshaw.
Despite their dominance in the opening 45, Sunderland couldn’t convert any of their chances as the first half ended goalless between the two sides.
Zak Johnson replaced Aji Alese in defence at half-time for Régis Le Bris with Blackpool making eight changes ahead of the second stanza. Chris Rigg then replaced Alan Browne at the 70-minute mark with the scores still level.
Sunderland took the lead deep into the second half through Jack Clarke after good work from Dan Neil, Chris Rigg and Patrick Roberts in the build-up.
Here, Phil Smith delivers his player ratings as Sunderland faced Blackpool at Bloomfield Road:
9. Patrick Roberts
Started brightly and had some really good moments. Not as prominent in the second but popped up late on to slide the ball across for Clarke to score. Good confidence boost to get an assist ahead of the campaign. 6 | Ian Horrocks
10. Jack Clarke
Sunderland’s most dangerous outlet as usual, should have had an assist for a strong run and cross in the first half before being alert to crash in the later winner. 7 Photo: Frank Reid
11. Eliezer Mayenda
Started brightly and went close with a couple of decent efforts. Another fairly promising performance but the goal just eluded him today. Could attack the six-yard box more aggressively but certainly promise. 6 | Ian Horrocks
12. Zak Johnson
A really steady cameo from the youngster. Covered well at times and produced a composed display. 6 | Photo: National World