New Zealand Warriors fullback Roger Tuivasa-Sheck concedes he must improve with his side winless to start the season and facing Melbourne Storm in their first home game of the season on Sunday.

“I feel like I can be better,” the fullback said.

“The last two games I haven’t proved myself as a top player yet. I really want to get back to it.

“Most of the boys know the structure and I’m still working into it and seeing where I can apply myself best.

“Everyone’s working hard but I can look at myself and try to improve and have more input to the team.”