With props Jared Waerea-Hargreaves and Matt Lodge leading the way up front and Tedesco typically elusive with nine tackle breaks, the Roosters turned an eight-point half-time lead into their 12th win of the season.
The Roosters needed just four minutes to open the scoring thanks to Joseph Suaalii, who had a saloon passage to the line courtesy of a long cut-out pass from Victor Radley.
Radley was in the thick of the action again in the 17th minute when he put Lodge over next to the posts with a good short ball and the Roosters led 10-0.