Ulster centre Darren Cave believes it's about time that the Irish province put one over Saracens after key European defeats.
Saracens have knocked out Ulster in the quarter-finals both in 2013 and 2014.
Cave took note of Saracens impressive performance in their Round 1 victory over Toulouse and knows the quality they have at their disposal.
Ulster's opening game with Oyonnax was postponed shortly before kick-off on Saturday after the attacks in Paris.
Cave added that the side will be physically fresh because of that for Saracens' visit, but that it hadn't been a typical opening European weekend for the 2012 finalists.
Cave told the Belfast Telgraph: "I wouldn't say we owe them one, we owe them two. We don't need any motivation but at the same time we know how good they are.
"We just need to focus on ourselves, get ourselves right, and hopefully if we do that we can put them under pressure and see if we can get the result we want.
"Running up 32 points against Toulouse is impressive obviously but we knew already how good a side they were.
"For us, we'll obviously not need to freshen up physically but maybe mentally after what's been a strange weekend and come in at the start of the week to get ready for a big game."