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 bagged a triple as the Saints secured maximum points from their first two European games with an eight-try thrashing of Pretoria.
Sleightholme crossed twice and Henry Pollock secured the fourth try inside an hour as a commanding Northampton side cut loose in the second half.
The Bulls were still in the game with the score 14-5 at the interval but a sin-binning to forward Tshakweni in the 53rd minute for a needless trip proved very costly and they did not score a point in the second half.
International Fin Smith added 10 points with the boot as Northampton went top of Pool Four on points difference from holders Bordeaux-Bègles with the two teams on 10 points.
The nature of this victory, following a 35-27 away win at Pau previously, means last year's losing finalists Saints could not have asked for a more ideal beginning as they aim to go one better this season.
Bulls fly-half Wolhuter failed with an early shot at goal before Saints opened the scoring when Pollock made a break before passing to Sleightholme who showed his pace to race clear to the line.
But an mistake from the winger let the Bulls back in as the ball slipped from his grasp in contact, allowing Bulls wing Jacobs to kick on and show electric speed of his own to reply after 22 minutes.
Shortly after, Saints had their second try as fast passing from Mitchell at the ruck base and then Smith sent Hendy over to make it 14-5 at the half-time whistle.
Northampton were on top in possession and territory and were being aided from Bulls fly-half Kade 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, stepping inside to wrong-foot the onrushing defense before delivering a perfectly weighted grubber kick over the line for George Hendy to collect his second try and Northampton's third.
Bulls prop Tshakweni was then shown a yellow card for a trip on Emmanuel Iyogun. Tshakweni was insistent he had been responding to a trip just prior by Iyogun but the incident from the Northampton substitute was ruled unintentional when looked at by the match officials.
Saints seized the opportunity of having the extra man to clinch the bonus point through Pollock before Coles and Sleightholme scored as the hosts registered three scores in five minutes.
Hendy wrapped up his triple with twelve minutes left on the clock and Kemeny strolled in for the eighth try of an excellent day for Northampton in the dying moments.
The leading pair in the pool meet in a rerun of last year's final when the Investec Champions Cup returns in the new year as Saints travel to Bordeaux-Bègles. The Saints then conclude the group phase with a home game against Scarlets on 18 January.
The Pretoria Bulls, who have a single point from two matches, welcome Bristol in their next outing before traveling to 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)