Investec Champions Cup Pool Four
Northampton Saints (14) 50
Tries: Sleightholme 2, Hendy 3, Pollock, Coles, Kemeny Cons: Smith 5
Pretoria Bulls (5) 5
Tries: Jacobs
George Hendy scored a hat-trick as the Saints made it maximum points from their first two Investec Champions Cup games with an eight-try thrashing of Pretoria.
Ollie Sleightholme scored two tries and Henry Pollock secured the bonus point try before the hour mark as a commanding Saints team cut loose in the latter period.
The Bulls were still in the game with the score 14-5 at the break but a yellow card to prop Alulutho Tshakweni in the 53rd minute for a unnecessary trip proved decisive and they did not score a point in the final forty minutes.
England fly-half Fin Smith contributed 10 points with the boot as Saints went top of Pool Four on superior points difference from holders Bordeaux-Bègles with both sides on 10 points.
The manner of this victory, coming after a 35-27 away win at Section Paloise last week, means last year's losing finalists Saints could not have hoped for a better start as they aim to go one better in this campaign.
Pretoria's number ten Kade Wolhuter failed with an early penalty before Saints took the lead when Henry Pollock made a break before passing to Ollie Sleightholme who demonstrated his speed to race clear to the line.
But an mistake from Sleightholme let the Bulls back in as the ball slipped from his grasp in the tackle, allowing Pretoria winger Stravino Jacobs to kick on and show blistering pace of his own to score after 22 minutes.
Ten minutes later, Saints had their second try as fast passing from Alex Mitchell at the base of a ruck and then Smith put George Hendy over to make it 14-5 at the break.
Saints were on top in both ball and field position and were being given a helping hand from Bulls fly-half Wolhuter who twice missed touch with clearing penalties to reinvite pressure onto the away side.
That proved decisive after 48 minutes when Fin Smith was again the creator, darting inside to wrong-foot the onrushing defense before sending a sweet grubber kick over the line for George Hendy to collect his second and Saints' third score.
Pretoria forward Alulutho Tshakweni was then shown a yellow card for a trip on Emmanuel Iyogun. Tshakweni was adamant he had been reacting to a trip just prior by Iyogun but the contact from the Northampton substitute was ruled unintentional when reviewed by the officials.
Saints seized the opportunity of having the extra man to clinch the bonus point through Henry Pollock before Alex Coles and Ollie Sleightholme crossed as the home team notched three tries in five minutes.
George Hendy completed his hat-trick with 12 minutes remaining and Kemeny strolled in for the eighth try of an excellent day for Saints in the dying moments.
The top two teams in the pool will face off in a rematch of the previous season's final when the Investec Champions Cup resumes in the new year as Saints head to Bordeaux. Northampton then round off the group phase with a fixture at home against the Scarlets on January 18th.
The Bulls, who have a single point from their opening two games, welcome Bristol next before an away trip face Pau.
Northampton: Furbank; Sleightholme, Hutchinson, Dingwall, Hendy; F Smith, Mitchell; Fischetti, Wright, Davison, Coles, Van der Mescht, Kemeny, Pearson, Pollock
Replacements: R Smith, Iyogun, Kundiona, Munga, Prowse, Graham, James, Thame
Bulls: Williams; Petersen, Gans, Vorster, Jacobs; Wolhuter, Burger; Tshakweni, Van der Merwe, Smith, Wiese, Van Heerden, Coetzee, Ludwig, Louw
Replacements: Else, Sithole, Mchunu, Gumede, Carr, Papier, Johannes, Van Niekerk
Yellow card: Tshakweni (53)
Referee: Hollie Davidson (Sco)
Assistant referees: Rob McDowell (Sco) and Dave Sutherland (Sco)
TMO: Mike Adamson (Sco)
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