Tedesco faced off against his old club Wests Tigers last weekend in the NRL's opening round.

The fullback and new recruit Cooper Cronk failed to gell, and the Roosters fell to a 10-8 defeat.

Tedesco struggled to make an impact and bombed a try in the opening stages.

But Blues boss and Roosters legend Fittler believes the 25-year-old will improve.

"He just had one of those days," Fittler told the NSW Rugby League website.

"He was probably looking for a hole, for someone to dig a big hole in the footystadium for him to jump in. Nothing seemed to go right for the poor kid. But he’ll bounce back."

The Roosters face the Bulldogs in round two and Fittler said the match is the perfect chance for Tedesco to show his wares.

"Nothing better than a great rivalry between the two clubs," he said.

"Canterbury were fantastic so they’ll test him out."