"We were pretty relentless out there and because of that we were able to build a lot of pressure," McCall is quoted as saying by ESPN. "We weren't expecting a scoreline like that, but we wanted a performance full of energy and we got that.
"Charlie was one of several people who played really well and he'll be the first to say the pack gave him a great platform. Charlie pulled the strings beautifully."
Saracens continue their Aviva Premiership campaign next Saturday when they make the trip to London Irish.