Owen Farrell has warned Glasgow Warriors there is more to come from Saracens in the wake of their eight-try demolition of Bath.
The European champions host Glasgow in Sunday's quarter-final at Allianz Park with momentum generated by a 53-10 victory over their Aviva Premiership rivals, but Farrell insists there is still room for improvement.
The 25-year-old says Saracens were good "in patches" during the Bath victory but has called on his team-mates to improve further in the European Rugby Champions Cup this weekend, live on Sky Sports 4.
"Everyone's in a good place and ready for it, but I don't think we were where we think we can be," the England fly-half said.
"We were good in parts against Bath and not so good in others and that puts us in good stead.
"There are a lot of fix-ups and stuff we can do better. The scoring ran away and it wasn't a reflection of the game. We did some good stuff, but in patches."
Saracens have also turned to basketball to help warm-up their players before training sessions.
"It's been brought in as an enjoyable warm-up - moving about and throwing a ball around just before we get cracking with everything," Farrell said.