Saracens crush outmatched Oyonnax
England international wing Chris Ashton scored a hat-trick and Fijian-born Italy No.8 Samuela Vunisa added a brace with Alex Goode, Mike Ellery and Jamie George also crossing the whitewash.
The victory, stretched Sarries' Pool One lead to 14 points ahead of Ulster's trip to Toulouse on Sunday and it came a week after a six-try 45-10 win at Oyonnax.
Debutants Oyonnax are now sure to miss out on the knock-out rounds after a third defeat in a row in the competition. They did, however, get a second-half interception try from Fetu'u Vainikolo.
Saracens were a lick of paint away from taking the lead when wing Ellery touched down in the left corner but his heel had just brushed the touchline before grounding. The hosts stole Oyonnax's line-out and following barging pressure from the forwards, they span the ball wide and Ashton dived over in the corner on 12 minutes.
England Sevens international Ellery was on fire early on and his break from Duncan Taylor's inside pass almost set up Ashton for a second score. Just as was the case a week ago in France, the English champions threatened to run away with the match before half-time.
Only a forward pass by early replacement hooker George denied Ashton a second touchdown in the right corner but he didn't have to wait long for that to come, as flyhalf Owen Farrell's clever grubber sent Ashton clear of the Oyonnax backline.
Although Farrell kicked one penalty, Saracens regularly demonstrated their intent to secure the attacking bonus point as soon as possible and put several kickable penalties into touch for an attacking line-out.
From one of those, on the stroke of half-time, Vunisa was driven over by an unstoppable rolling maul for the third try and a 20-6 lead going into the break that reflected their concentration on earning a bonus point, rather than on killing off dominated opponents.
Straight after the restart, the hosts repeated the trick with Vunisa again driven over as Oyonnax simply couldn't handle the Saracens power up front. With the bonus point secured, Sarries let loose.
A few minutes later, fullback Alex Goode dissected a ponderous Oyonnax defence and ran half the length of the field before sliding over the line. Oyonnax' defence was crumbling, as was their attack, allowing Ellery to pick up a wayward pass down the French line before sprinting clear from inside his own half to score the sixth try.
George then made up for his earlier indiscretion by running a perfect line and showing a surprising turn of pace to take replacement flyhalf Charlie Hodgson's pass and score the seventh try.
Vainikolo's score 12 minutes from time was nothing but scant consolation as Ashton had the last word, after a Richard Wigglesworth grubber that was a carbon copy of the try Farrell set up in the first period.
Scorers:
For Saracens:
Tries: Ashton 3, Vunisa 2, Goode, Ellery, George
Cons: Farrell 4, Hodgson 2
Pen: Farrell
For Oyonnax:
Try: Vainikolo
Con: Clegg
Pens: Lespinas 2
Teams:
Saracens: 15 Alex Goode, 14 Chris Ashton, 13 Duncan Taylor, 12 Brad Barritt (captain), 11 Mike Ellery, 10 Owen Farrell, 9 Neil De Kock, 8 Samuela Vunisa, 7 Kelly Brown, 6 Jackson Wray, 5 Maro Itoje, 4 Jim Hamilton, 3 Petrus Du Plessis, 2 Schalk Brits, 1 Mako Vunipola.
Replacements: 16 Jamie George, 17 Richard Barrington, 18 Juan Figallo, 19 Michael Rhodes, 20 Will Fraser, 21 Richard Wigglesworth, 22 Charlie Hodgson, 23 Ben Ransom.
Oyonnax: 15 Florian Denos, 14 Daniel Ikpefan, 13 Guillaume Bousses, 12 Uwa Tawalo, 11 Fetu'u Vainikolo, 10 Regis Lespinas, 9 Julien Blanc, 8 Florian Faure, 7 Pedrie Wannenburg, 6 Valentin Ursache, 5 Geoffrey Fabbri, 4 Leon Power, 3 Marc Clerc, 2 Jeremie Maurouard, 1 Laurent Delboulbès.
Replacements: 16 Jody Jenneker, 17 Stan Wright, 18 Horace Pungea, 19 Viliami Maafu, 20 Thomas Bordes, 21 Arthur Aziza, 22 Rory Clegg, 23 Vincent Martin.
Referee: George Clancy (Ireland)
Assistant referees: Peter Fitzgibbon (Ireland), Jonathan Peak (Ireland)
TMO: Marshall Kilgore (Ireland)
Agence France-Presse
