First-half goals from Rowan Roache and Ben Jacobson helped the under-18s record a 2-0 victory against Doncaster Rovers in the second round of the FA Youth Cup.
The Seasiders took the lead in the 20th minute at the Keepmoat Stadium, after Owen Watkinson was fouled in the box.
Having caught a flight back from international duty earlier in the day, Republic of Ireland under-18 forward Roache stepped up from the spot to convert.
That lead was then doubled in the 40th minute, when captain Jacobson fired in from a Roache corner.
A tie away to West Ham United now awaits John Murphy's side in the third round of the competition, with the fixture set to take place at Dagenham.