Brad Barritt believes Saracens face their biggest game of the season to date on Sunday when they take on Toulouse in the Heineken Cup.
The capital club may currently be sitting pretty at the top of the Aviva Premiership table but they have work to do in Europe, even if they are level on points with their next opponents at the summit of Pool 3.
The clash at Stade Ernest Wallon should go a long way to deciding who wins the group, meaning Sarries can ill-afford to suffer another defeat at the hands of the Top 14 big-spenders.
Toulouse won the first meeting 17-16 at Wembley in round two, only to then suffer a shock loss at home to Connacht to let slip their grip on the group.
"It's a huge game - probably, in perspective of our season, the biggest one yet," Barritt told Sky Sports.
"It will put you in a commanding spot in the pool. They don't often lose at home, so there's a huge amount to play for. But that's why we play rugby, to have these tests and challenges."
Barritt, who has recently returned to action after a lengthy injury lay-off due to damaged ankle ligaments, believes Toulouse offer a blueprint for Saracens as they look to become a powerhouse in the competition.
"The Heineken Cup success they've had over the past decade just speaks volumes to what they have achieved," the England international added.
"There are a lot of guys who have been involved in that success, so the culture and the way they conduct themselves in the Heineken Cup is the way we want to be as a squad."