Last year Canterbury relied on Tom Taylor to earn them their points and again his kicking was important. He scored 22 points through five conversions and four penalties and missed only two attempts.
Two long-distance penalties after halftime stretched their lead and a try to replacement prop Paea Fa'anunu after 65 minutes eased the pressure on the Cantabs. Fruean's second try on fulltime - an intercept - inflated the final score.
It was an impressive response to last weekend's failed Ranfurly Shield challenge against Taranaki in miserable conditions in New Plymouth. They also had the rare luxury of an eight-day turnaround to prepare and they certainly started like a team keen to get back to work.
"To stay in the front bunch we needed to win today and we did it so we're pretty happy,'' captain George Whitelock said.
For Waikato it was their fourth loss in six matches and they are in danger of relegation. They face another tough challenge in the form of Tasman in Hamilton on Thursday, while Canterbury have an easier prospect in Southland at AMI Stadium in Christchurch next Sunday.
Centre Save Tokula and halfback Leonard were Waikato's best players, though the latter was substituted after 50 minutes.
Canterbury 52 (Robbie Fruean 2, Nasi Manu, Johnny McNicholl, George Whitelock, Paea Fa'anunu tries; Tom Taylor 5 cons, 4 pens)
Waikato 27 (Toby Smith, Ben May, Brendon Leonard tries; Trent Renata 3 cons, 2 pens).
HT: 29-24.