But Canterbury never panicked, showing patience in attack and waiting for Otago to tire, certain the southern men would fade after all the early pressure applied. They were right, and enough of a gap eventually appeared in the home side's defence for Rob Thompson to score the decisive try shortly after the halftime break.
It was unfortunate for Otago that they couldn't sustain their strong start, slumping to a defeat that saw them remain second in the championship. They should still take some confidence into next weekend's Ranfurly Shield challenge against Hawkes Bay, given the scare they provided for the defending champions.
Otago's physicality proved too much for their opponents early on, though Canterbury would have been content in limiting the hosts' ascendancy to a pair of Hayden Parker penalties.
After Jayden Spence collected Parker's elusive grubber to cross, however, Canterbury had a real fight on their hands. But the champs came into the game as the half wore on, running with more authority to create an opportunity for Nasi Manu to pull his side within three at halftime.
That deficit was erased shortly after the break when Richie Mo'unga continued his perfect kicking record, before Thompson took advantage of a drained defence to seize the lead for good.
Otago 16 (Spence try; Parker 3 pens, con)
Canterbury 23 (Manu, Thompson tries; Mo'unga 3 pens, 2 cons)
HT: 13-10