However, Llorente netted a 12-minute hat-trick after the restart before Son - for a second time - and Kyle Walker-Peters got on the scoresheet to give Mauricio Pochettino's side a last-eight tie at Swansea City.
Find out how all of the action unfolded in North London courtesy of Sports Mole's minute-by-minute updates below.
TOTTENHAM HOTSPUR SUBSTITUTES: Gazzaniga, Walker-Peters, Sanchez, Dembele, Eriksen, Alli, Kane
ROCHDALE SUBSTITUTES: Nthle, Rathbone, Thompson, Inman, Davies, Moore, Adshead
TOTTENHAM HOTSPUR XI: Vorm; Trippier, Dier, Foyth, Rose; Sissoko, Winks; Lamela, Son, Lucas; Llorente
ROCHDALE XI: Lillis, Rafferty, McNulty, McGahey, Humphrys, Camps, Done, Delaney, Cannon, Kitching, Henderson
Stay patient with me. This has been a bizarre opening half-an-hour!
If you would like to read our on-the-whistle match report, you can do so by clicking here. Goodbye for now.