Oxford coach Tony Benson is looking to halt a run of five consecutive defeats when his side host Oldham on Sunday.
The hosts’ chances are boosted by the return of Dave Ellison, who missed last week’s defeat against Gloucestershire All Golds.
Naylor said: “You’ve got to be on your game every time you go out to play.
“There are no easy games (in Kingstone Press Championship One). Every team in the division poses a threat.”
Oldham winger Mo Agoro has scored tries in each of his side’s last eight fixtures and is aiming to continue his run on Sunday.