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
The young winger scored a hat-trick as the Saints made it a perfect ten points from their first two European games with an eight-try thrashing of Pretoria.
Sleightholme scored two tries and Henry Pollock scored the bonus point try inside an hour as a commanding Northampton side cut loose in the second half.
The visitors were within touching distance with the score fourteen-five at the interval but a yellow card to forward Tshakweni in the 53rd minute for a needless trip proved decisive and they failed to register a point in the second half.
International Fin Smith added 10 points with the boot as Saints went top of Pool Four on points difference from defending champions Bordeaux with the two teams on 10 points.
The nature of this win, following a 35-27 victory on the road at Pau last week, means last year's losing finalists Saints could not have hoped for a more ideal beginning as they aim to improve on that this season.
Pretoria's number ten Wolhuter failed with an early shot at goal before Saints took the lead when Pollock made a break before passing to Ollie Sleightholme who showed his pace to sprint away to the line.
But an error from Sleightholme let the Bulls back in as the ball slipped from his grasp in the tackle, allowing Bulls wing Jacobs to hack the ball forward and show electric speed of his own to score after 22 minutes.
Ten minutes later, Northampton had their second as fast passing from Mitchell at the base of a ruck and then Fin Smith sent Hendy over to make it fourteen to five at the half-time whistle.
Northampton were on top in possession and territory and were being given a helping hand from Bulls fly-half Wolhuter who twice missed touch with clearing penalties to bring the pressure back on the away side.
That told after 48 minutes when Smith was again the architect, darting inside to deceive the advancing defence before delivering a perfectly weighted grubber kick over the line for George Hendy to collect his second try and Saints' third.
Bulls prop Tshakweni was then shown a yellow card for a tripping offense on Iyogun. The prop was insistent he had been responding to a trip just prior by the Saints player but the contact from the Saints replacement prop was ruled unintentional when looked at by the match officials.
Northampton capitalized of having the extra man to secure the try bonus point through Henry Pollock before Alex Coles and Sleightholme scored as the hosts notched three tries in five frantic minutes.
George Hendy completed his triple with 12 minutes remaining and Josh Kemeny walked over for the eighth try of an excellent day for Northampton in the final minute.
The top two teams in the pool will face off in a rerun of last year's final when the Investec Champions Cup returns in January as Northampton head to Bordeaux. Northampton then conclude the group phase with a home game against the Scarlets on 18 January.
The Bulls, who have a single point from two matches, host 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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