Andy Farrell takes on the Glasgow defence for Saracens on Sunday
Saracens (25) 33
Tries: Vyvyan, Penney, Skirving, Ratuvou
Con: Jackson 2
Pens: Jackson 3
Glasgow (11) 31
Tries: Low, O'Hare, Kellock
Cons: Parks 2
Pens: Parks 4
Saracens survived a late Glasgow fightback to open their Heineken Cup campaign with a bonus-point victory.
Tries from Hugh Vyvyan, Rodd Penney and Ben Skirving, to one from Moray Low, gave Sarries a 25-11 half-time lead.
Kameli Ratuvou added a fourth try but two Dan Parks penalties and a converted Hefin O'Hare score cut the lead to six.
Glen Jackson's third penalty edged the hosts nine points clear and Alastair Kellock's last-minute converted try was too little, too late for Glasgow.
Saracens boss Alan Gaffney:
"The attacking part of our game was very good and deserves to be rewarded but the defensive part is leaving a lot to be desired.
"It's not the structure, it's individual defence which is letting us down - we seem to slacken off when we get a handy lead.
"We have to become much more ruthless and not concede soft tries. The last two were just abysmal."
Glasgow coach Sean Lineen:
"There was a lot of rugby played but we had to work slightly harder for our tries than Saracens. We made it very easy for them.
"Our defence has been fairly watertight in the last few games so to leak tries like that was disappointing.
"We made too many unforced errors and Saracens are one team who will make you pay for that, but the boys showed tremendous courage to come back."
Saracens: Leonelli; Penney, Sorrell, Farrell, Ratuvou; Jackson, De Kock; Yates, Cairns, Johnson, Chesney, Vyvyan, Gustard, Hill, Skirving.
Replacements: Ongaro, Mercey, Ryder, Seymour, Rauluni, Ross, Thrower.
Glasgow: Stortoni; Faatau, Henderson, Gibson, T Evans; Parks, O'Young; Va'a, Thomson, M Low, Newman, Kellock, K Brown, Barclay, Beattie.
Replacements: Milligan, Kalman, Turner, Eddie, Pinder, Barrow, O'Hare.
Referee: Romain Poite (France)